Home / 39,637.76-54,700.85-21,731.69

Finding the Fourth Proportional to 39,637.76, 54,700.85 and 21,731.69

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Solution

The fourth proportional to 39,637.76, 54,700.85 and 21,731.69 is: 29,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,637.76 : 54,700.85 = 21,731.69 : x
  2. Step 2: Convert to fraction form
    39,637.76/54,700.85 = 21,731.69/x
  3. Step 3: Cross multiply
    39,637.76x = 54,700.85 × 21,731.69
  4. Step 4: Simplify right side
    39,637.76x = 1,188,742,106.02
  5. Step 5: Solve for x
    x = 1,188,742,106.02/39,637.76
  6. Step 6: Final answer
    x = 29,990.15

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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.