Home / 28,543.72-39,391.86-15,966.28

Finding the Fourth Proportional to 28,543.72, 39,391.86 and 15,966.28

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Solution

The fourth proportional to 28,543.72, 39,391.86 and 15,966.28 is: 22,034.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.72 : 39,391.86 = 15,966.28 : x
  2. Step 2: Convert to fraction form
    28,543.72/39,391.86 = 15,966.28/x
  3. Step 3: Cross multiply
    28,543.72x = 39,391.86 × 15,966.28
  4. Step 4: Simplify right side
    28,543.72x = 628,941,466.48
  5. Step 5: Solve for x
    x = 628,941,466.48/28,543.72
  6. Step 6: Final answer
    x = 22,034.32

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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.