Home / 12,475.32-18,591.39-12,115.47

Finding the Fourth Proportional to 12,475.32, 18,591.39 and 12,115.47

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Solution

The fourth proportional to 12,475.32, 18,591.39 and 12,115.47 is: 18,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,475.32 : 18,591.39 = 12,115.47 : x
  2. Step 2: Convert to fraction form
    12,475.32/18,591.39 = 12,115.47/x
  3. Step 3: Cross multiply
    12,475.32x = 18,591.39 × 12,115.47
  4. Step 4: Simplify right side
    12,475.32x = 225,243,427.80
  5. Step 5: Solve for x
    x = 225,243,427.80/12,475.32
  6. Step 6: Final answer
    x = 18,055.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.