Home / 13,110.40-19,665.60-7,926.40

Finding the Fourth Proportional to 13,110.40, 19,665.60 and 7,926.40

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Solution

The fourth proportional to 13,110.40, 19,665.60 and 7,926.40 is: 11,889.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.40 : 19,665.60 = 7,926.40 : x
  2. Step 2: Convert to fraction form
    13,110.40/19,665.60 = 7,926.40/x
  3. Step 3: Cross multiply
    13,110.40x = 19,665.60 × 7,926.40
  4. Step 4: Simplify right side
    13,110.40x = 155,877,411.84
  5. Step 5: Solve for x
    x = 155,877,411.84/13,110.40
  6. Step 6: Final answer
    x = 11,889.60

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1.5x scale

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.