Home / 20,909.34-28,832.76-14,938.83

Finding the Fourth Proportional to 20,909.34, 28,832.76 and 14,938.83

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Solution

The fourth proportional to 20,909.34, 28,832.76 and 14,938.83 is: 20,599.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,909.34 : 28,832.76 = 14,938.83 : x
  2. Step 2: Convert to fraction form
    20,909.34/28,832.76 = 14,938.83/x
  3. Step 3: Cross multiply
    20,909.34x = 28,832.76 × 14,938.83
  4. Step 4: Simplify right side
    20,909.34x = 430,727,700.07
  5. Step 5: Solve for x
    x = 430,727,700.07/20,909.34
  6. Step 6: Final answer
    x = 20,599.78

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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.