Home / 18,428.66-25,431.56-10,470.90

Finding the Fourth Proportional to 18,428.66, 25,431.56 and 10,470.90

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Solution

The fourth proportional to 18,428.66, 25,431.56 and 10,470.90 is: 14,449.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,428.66 : 25,431.56 = 10,470.90 : x
  2. Step 2: Convert to fraction form
    18,428.66/25,431.56 = 10,470.90/x
  3. Step 3: Cross multiply
    18,428.66x = 25,431.56 × 10,470.90
  4. Step 4: Simplify right side
    18,428.66x = 266,291,269.25
  5. Step 5: Solve for x
    x = 266,291,269.25/18,428.66
  6. Step 6: Final answer
    x = 14,449.85

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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.