Home / 29,358.78-40,513.94-15,929.52

Finding the Fourth Proportional to 29,358.78, 40,513.94 and 15,929.52

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Solution

The fourth proportional to 29,358.78, 40,513.94 and 15,929.52 is: 21,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,358.78 : 40,513.94 = 15,929.52 : x
  2. Step 2: Convert to fraction form
    29,358.78/40,513.94 = 15,929.52/x
  3. Step 3: Cross multiply
    29,358.78x = 40,513.94 × 15,929.52
  4. Step 4: Simplify right side
    29,358.78x = 645,367,617.51
  5. Step 5: Solve for x
    x = 645,367,617.51/29,358.78
  6. Step 6: Final answer
    x = 21,982.10

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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.