Home / 20,470.88-28,248.66-11,518.76

Finding the Fourth Proportional to 20,470.88, 28,248.66 and 11,518.76

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Solution

The fourth proportional to 20,470.88, 28,248.66 and 11,518.76 is: 15,895.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.88 : 28,248.66 = 11,518.76 : x
  2. Step 2: Convert to fraction form
    20,470.88/28,248.66 = 11,518.76/x
  3. Step 3: Cross multiply
    20,470.88x = 28,248.66 × 11,518.76
  4. Step 4: Simplify right side
    20,470.88x = 325,389,534.86
  5. Step 5: Solve for x
    x = 325,389,534.86/20,470.88
  6. Step 6: Final answer
    x = 15,895.24

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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.