Home / 28,102.59-38,781.50-15,527.25

Finding the Fourth Proportional to 28,102.59, 38,781.50 and 15,527.25

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Solution

The fourth proportional to 28,102.59, 38,781.50 and 15,527.25 is: 21,427.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.59 : 38,781.50 = 15,527.25 : x
  2. Step 2: Convert to fraction form
    28,102.59/38,781.50 = 15,527.25/x
  3. Step 3: Cross multiply
    28,102.59x = 38,781.50 × 15,527.25
  4. Step 4: Simplify right side
    28,102.59x = 602,169,968.24
  5. Step 5: Solve for x
    x = 602,169,968.24/28,102.59
  6. Step 6: Final answer
    x = 21,427.56

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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.