Home / 28,132.26-38,823.72-15,557

Finding the Fourth Proportional to 28,132.26, 38,823.72 and 15,557

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Solution

The fourth proportional to 28,132.26, 38,823.72 and 15,557 is: 21,469.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.26 : 38,823.72 = 15,557 : x
  2. Step 2: Convert to fraction form
    28,132.26/38,823.72 = 15,557/x
  3. Step 3: Cross multiply
    28,132.26x = 38,823.72 × 15,557
  4. Step 4: Simplify right side
    28,132.26x = 603,980,612.04
  5. Step 5: Solve for x
    x = 603,980,612.04/28,132.26
  6. Step 6: Final answer
    x = 21,469.32

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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.