Home / 20,470.08-28,248.48-11,517.60

Finding the Fourth Proportional to 20,470.08, 28,248.48 and 11,517.60

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Solution

The fourth proportional to 20,470.08, 28,248.48 and 11,517.60 is: 15,894.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.08 : 28,248.48 = 11,517.60 : x
  2. Step 2: Convert to fraction form
    20,470.08/28,248.48 = 11,517.60/x
  3. Step 3: Cross multiply
    20,470.08x = 28,248.48 × 11,517.60
  4. Step 4: Simplify right side
    20,470.08x = 325,354,693.25
  5. Step 5: Solve for x
    x = 325,354,693.25/20,470.08
  6. Step 6: Final answer
    x = 15,894.16

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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.