Home / 28,196.57-38,909.23-15,447.71

Finding the Fourth Proportional to 28,196.57, 38,909.23 and 15,447.71

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Solution

The fourth proportional to 28,196.57, 38,909.23 and 15,447.71 is: 21,316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,196.57 : 38,909.23 = 15,447.71 : x
  2. Step 2: Convert to fraction form
    28,196.57/38,909.23 = 15,447.71/x
  3. Step 3: Cross multiply
    28,196.57x = 38,909.23 × 15,447.71
  4. Step 4: Simplify right side
    28,196.57x = 601,058,560.02
  5. Step 5: Solve for x
    x = 601,058,560.02/28,196.57
  6. Step 6: Final answer
    x = 21,316.72

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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.