Home / 15,168.60-20,928.24-9,116.28

Finding the Fourth Proportional to 15,168.60, 20,928.24 and 9,116.28

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Solution

The fourth proportional to 15,168.60, 20,928.24 and 9,116.28 is: 12,577.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,168.60 : 20,928.24 = 9,116.28 : x
  2. Step 2: Convert to fraction form
    15,168.60/20,928.24 = 9,116.28/x
  3. Step 3: Cross multiply
    15,168.60x = 20,928.24 × 9,116.28
  4. Step 4: Simplify right side
    15,168.60x = 190,787,695.75
  5. Step 5: Solve for x
    x = 190,787,695.75/15,168.60
  6. Step 6: Final answer
    x = 12,577.81

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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.