Home / 13,423.60-20,135.40-9,017.20

Finding the Fourth Proportional to 13,423.60, 20,135.40 and 9,017.20

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Solution

The fourth proportional to 13,423.60, 20,135.40 and 9,017.20 is: 13,525.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.60 : 20,135.40 = 9,017.20 : x
  2. Step 2: Convert to fraction form
    13,423.60/20,135.40 = 9,017.20/x
  3. Step 3: Cross multiply
    13,423.60x = 20,135.40 × 9,017.20
  4. Step 4: Simplify right side
    13,423.60x = 181,564,928.88
  5. Step 5: Solve for x
    x = 181,564,928.88/13,423.60
  6. Step 6: Final answer
    x = 13,525.80

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.