Home / 28,103.04-38,781.92-15,527.52

Finding the Fourth Proportional to 28,103.04, 38,781.92 and 15,527.52

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Solution

The fourth proportional to 28,103.04, 38,781.92 and 15,527.52 is: 21,427.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.04 : 38,781.92 = 15,527.52 : x
  2. Step 2: Convert to fraction form
    28,103.04/38,781.92 = 15,527.52/x
  3. Step 3: Cross multiply
    28,103.04x = 38,781.92 × 15,527.52
  4. Step 4: Simplify right side
    28,103.04x = 602,187,038.44
  5. Step 5: Solve for x
    x = 602,187,038.44/28,103.04
  6. Step 6: Final answer
    x = 21,427.83

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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.