Home / 28,493.28-39,320.70-15,747.42

Finding the Fourth Proportional to 28,493.28, 39,320.70 and 15,747.42

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Solution

The fourth proportional to 28,493.28, 39,320.70 and 15,747.42 is: 21,731.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,493.28 : 39,320.70 = 15,747.42 : x
  2. Step 2: Convert to fraction form
    28,493.28/39,320.70 = 15,747.42/x
  3. Step 3: Cross multiply
    28,493.28x = 39,320.70 × 15,747.42
  4. Step 4: Simplify right side
    28,493.28x = 619,199,577.59
  5. Step 5: Solve for x
    x = 619,199,577.59/28,493.28
  6. Step 6: Final answer
    x = 21,731.43

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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.