Home / 29,358.79-40,515.29-15,930.07

Finding the Fourth Proportional to 29,358.79, 40,515.29 and 15,930.07

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Solution

The fourth proportional to 29,358.79, 40,515.29 and 15,930.07 is: 21,983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,358.79 : 40,515.29 = 15,930.07 : x
  2. Step 2: Convert to fraction form
    29,358.79/40,515.29 = 15,930.07/x
  3. Step 3: Cross multiply
    29,358.79x = 40,515.29 × 15,930.07
  4. Step 4: Simplify right side
    29,358.79x = 645,411,284.57
  5. Step 5: Solve for x
    x = 645,411,284.57/29,358.79
  6. Step 6: Final answer
    x = 21,983.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.