Home / 18,520.17-25,557.86-10,455.54

Finding the Fourth Proportional to 18,520.17, 25,557.86 and 10,455.54

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Solution

The fourth proportional to 18,520.17, 25,557.86 and 10,455.54 is: 14,428.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.17 : 25,557.86 = 10,455.54 : x
  2. Step 2: Convert to fraction form
    18,520.17/25,557.86 = 10,455.54/x
  3. Step 3: Cross multiply
    18,520.17x = 25,557.86 × 10,455.54
  4. Step 4: Simplify right side
    18,520.17x = 267,221,175.27
  5. Step 5: Solve for x
    x = 267,221,175.27/18,520.17
  6. Step 6: Final answer
    x = 14,428.66

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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.