Home / 40,631.08-60,939.12-18,439.12

Finding the Fourth Proportional to 40,631.08, 60,939.12 and 18,439.12

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Solution

The fourth proportional to 40,631.08, 60,939.12 and 18,439.12 is: 27,655.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,631.08 : 60,939.12 = 18,439.12 : x
  2. Step 2: Convert to fraction form
    40,631.08/60,939.12 = 18,439.12/x
  3. Step 3: Cross multiply
    40,631.08x = 60,939.12 × 18,439.12
  4. Step 4: Simplify right side
    40,631.08x = 1,123,663,746.37
  5. Step 5: Solve for x
    x = 1,123,663,746.37/40,631.08
  6. Step 6: Final answer
    x = 27,655.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.