Home / 18,591.91-25,647.32-11,870.47

Finding the Fourth Proportional to 18,591.91, 25,647.32 and 11,870.47

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Solution

The fourth proportional to 18,591.91, 25,647.32 and 11,870.47 is: 16,375.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,591.91 : 25,647.32 = 11,870.47 : x
  2. Step 2: Convert to fraction form
    18,591.91/25,647.32 = 11,870.47/x
  3. Step 3: Cross multiply
    18,591.91x = 25,647.32 × 11,870.47
  4. Step 4: Simplify right side
    18,591.91x = 304,445,644.08
  5. Step 5: Solve for x
    x = 304,445,644.08/18,591.91
  6. Step 6: Final answer
    x = 16,375.17

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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.