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Finding the Fourth Proportional to 15,155.98, 20,925.51 and 9,493

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Solution

The fourth proportional to 15,155.98, 20,925.51 and 9,493 is: 13,106.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.98 : 20,925.51 = 9,493 : x
  2. Step 2: Convert to fraction form
    15,155.98/20,925.51 = 9,493/x
  3. Step 3: Cross multiply
    15,155.98x = 20,925.51 × 9,493
  4. Step 4: Simplify right side
    15,155.98x = 198,645,866.43
  5. Step 5: Solve for x
    x = 198,645,866.43/15,155.98
  6. Step 6: Final answer
    x = 13,106.76

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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.