Home / 28,939.62-39,909.90-18,864.24

Finding the Fourth Proportional to 28,939.62, 39,909.90 and 18,864.24

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Solution

The fourth proportional to 28,939.62, 39,909.90 and 18,864.24 is: 26,015.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.62 : 39,909.90 = 18,864.24 : x
  2. Step 2: Convert to fraction form
    28,939.62/39,909.90 = 18,864.24/x
  3. Step 3: Cross multiply
    28,939.62x = 39,909.90 × 18,864.24
  4. Step 4: Simplify right side
    28,939.62x = 752,869,931.98
  5. Step 5: Solve for x
    x = 752,869,931.98/28,939.62
  6. Step 6: Final answer
    x = 26,015.20

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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.