Home / 21,428.60-32,131.38-6,631.16

Finding the Fourth Proportional to 21,428.60, 32,131.38 and 6,631.16

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Solution

The fourth proportional to 21,428.60, 32,131.38 and 6,631.16 is: 9,943.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.60 : 32,131.38 = 6,631.16 : x
  2. Step 2: Convert to fraction form
    21,428.60/32,131.38 = 6,631.16/x
  3. Step 3: Cross multiply
    21,428.60x = 32,131.38 × 6,631.16
  4. Step 4: Simplify right side
    21,428.60x = 213,068,321.80
  5. Step 5: Solve for x
    x = 213,068,321.80/21,428.60
  6. Step 6: Final answer
    x = 9,943.18

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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.