Home / 39,929.64-59,931.24-20,221.92

Finding the Fourth Proportional to 39,929.64, 59,931.24 and 20,221.92

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Solution

The fourth proportional to 39,929.64, 59,931.24 and 20,221.92 is: 30,351.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,929.64 : 59,931.24 = 20,221.92 : x
  2. Step 2: Convert to fraction form
    39,929.64/59,931.24 = 20,221.92/x
  3. Step 3: Cross multiply
    39,929.64x = 59,931.24 × 20,221.92
  4. Step 4: Simplify right side
    39,929.64x = 1,211,924,740.78
  5. Step 5: Solve for x
    x = 1,211,924,740.78/39,929.64
  6. Step 6: Final answer
    x = 30,351.51

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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.