Home / 20,430.27-30,616.65-16,251.75

Finding the Fourth Proportional to 20,430.27, 30,616.65 and 16,251.75

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Solution

The fourth proportional to 20,430.27, 30,616.65 and 16,251.75 is: 24,354.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.27 : 30,616.65 = 16,251.75 : x
  2. Step 2: Convert to fraction form
    20,430.27/30,616.65 = 16,251.75/x
  3. Step 3: Cross multiply
    20,430.27x = 30,616.65 × 16,251.75
  4. Step 4: Simplify right side
    20,430.27x = 497,574,141.64
  5. Step 5: Solve for x
    x = 497,574,141.64/20,430.27
  6. Step 6: Final answer
    x = 24,354.75

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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.