Home / 13,120,810.10-19,681,215.15-7,381,247.30

Finding the Fourth Proportional to 13,120,810.10, 19,681,215.15 and 7,381,247.30

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Solution

The fourth proportional to 13,120,810.10, 19,681,215.15 and 7,381,247.30 is: 11,071,870.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120,810.10 : 19,681,215.15 = 7,381,247.30 : x
  2. Step 2: Convert to fraction form
    13,120,810.10/19,681,215.15 = 7,381,247.30/x
  3. Step 3: Cross multiply
    13,120,810.10x = 19,681,215.15 × 7,381,247.30
  4. Step 4: Simplify right side
    13,120,810.10x = 145,271,916,186,656.59
  5. Step 5: Solve for x
    x = 145,271,916,186,656.59/13,120,810.10
  6. Step 6: Final answer
    x = 11,071,870.95

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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.