Home / 13,120,809.10-19,681,213.65-7,381,246.30

Finding the Fourth Proportional to 13,120,809.10, 19,681,213.65 and 7,381,246.30

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Solution

The fourth proportional to 13,120,809.10, 19,681,213.65 and 7,381,246.30 is: 11,071,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120,809.10 : 19,681,213.65 = 7,381,246.30 : x
  2. Step 2: Convert to fraction form
    13,120,809.10/19,681,213.65 = 7,381,246.30/x
  3. Step 3: Cross multiply
    13,120,809.10x = 19,681,213.65 × 7,381,246.30
  4. Step 4: Simplify right side
    13,120,809.10x = 145,271,885,433,571.97
  5. Step 5: Solve for x
    x = 145,271,885,433,571.97/13,120,809.10
  6. Step 6: Final answer
    x = 11,071,869.45

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.