Home / 21,549.60-32,311.16-8,386.64

Finding the Fourth Proportional to 21,549.60, 32,311.16 and 8,386.64

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Solution

The fourth proportional to 21,549.60, 32,311.16 and 8,386.64 is: 12,574.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.60 : 32,311.16 = 8,386.64 : x
  2. Step 2: Convert to fraction form
    21,549.60/32,311.16 = 8,386.64/x
  3. Step 3: Cross multiply
    21,549.60x = 32,311.16 × 8,386.64
  4. Step 4: Simplify right side
    21,549.60x = 270,982,066.90
  5. Step 5: Solve for x
    x = 270,982,066.90/21,549.60
  6. Step 6: Final answer
    x = 12,574.81

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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.