Home / 28,215.59-38,937.26-15,469.56

Finding the Fourth Proportional to 28,215.59, 38,937.26 and 15,469.56

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Solution

The fourth proportional to 28,215.59, 38,937.26 and 15,469.56 is: 21,347.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.59 : 38,937.26 = 15,469.56 : x
  2. Step 2: Convert to fraction form
    28,215.59/38,937.26 = 15,469.56/x
  3. Step 3: Cross multiply
    28,215.59x = 38,937.26 × 15,469.56
  4. Step 4: Simplify right side
    28,215.59x = 602,342,318.48
  5. Step 5: Solve for x
    x = 602,342,318.48/28,215.59
  6. Step 6: Final answer
    x = 21,347.86

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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.