Home / 15,999.40-22,077.57-9,287.20

Finding the Fourth Proportional to 15,999.40, 22,077.57 and 9,287.20

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Solution

The fourth proportional to 15,999.40, 22,077.57 and 9,287.20 is: 12,815.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.40 : 22,077.57 = 9,287.20 : x
  2. Step 2: Convert to fraction form
    15,999.40/22,077.57 = 9,287.20/x
  3. Step 3: Cross multiply
    15,999.40x = 22,077.57 × 9,287.20
  4. Step 4: Simplify right side
    15,999.40x = 205,038,808.10
  5. Step 5: Solve for x
    x = 205,038,808.10/15,999.40
  6. Step 6: Final answer
    x = 12,815.41

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Similar ratio
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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.