Home / 18,520.25-25,557.98-10,455.65

Finding the Fourth Proportional to 18,520.25, 25,557.98 and 10,455.65

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Solution

The fourth proportional to 18,520.25, 25,557.98 and 10,455.65 is: 14,428.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.25 : 25,557.98 = 10,455.65 : x
  2. Step 2: Convert to fraction form
    18,520.25/25,557.98 = 10,455.65/x
  3. Step 3: Cross multiply
    18,520.25x = 25,557.98 × 10,455.65
  4. Step 4: Simplify right side
    18,520.25x = 267,225,268.17
  5. Step 5: Solve for x
    x = 267,225,268.17/18,520.25
  6. Step 6: Final answer
    x = 14,428.82

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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.