Home / 18,439.68-25,439.76-10,477.92

Finding the Fourth Proportional to 18,439.68, 25,439.76 and 10,477.92

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Solution

The fourth proportional to 18,439.68, 25,439.76 and 10,477.92 is: 14,455.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.68 : 25,439.76 = 10,477.92 : x
  2. Step 2: Convert to fraction form
    18,439.68/25,439.76 = 10,477.92/x
  3. Step 3: Cross multiply
    18,439.68x = 25,439.76 × 10,477.92
  4. Step 4: Simplify right side
    18,439.68x = 266,555,770.10
  5. Step 5: Solve for x
    x = 266,555,770.10/18,439.68
  6. Step 6: Final answer
    x = 14,455.55

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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.