Home / 29,001.68-39,984.24-20,928.56

Finding the Fourth Proportional to 29,001.68, 39,984.24 and 20,928.56

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Solution

The fourth proportional to 29,001.68, 39,984.24 and 20,928.56 is: 28,853.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,001.68 : 39,984.24 = 20,928.56 : x
  2. Step 2: Convert to fraction form
    29,001.68/39,984.24 = 20,928.56/x
  3. Step 3: Cross multiply
    29,001.68x = 39,984.24 × 20,928.56
  4. Step 4: Simplify right side
    29,001.68x = 836,812,565.89
  5. Step 5: Solve for x
    x = 836,812,565.89/29,001.68
  6. Step 6: Final answer
    x = 28,853.93

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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.