Home / 21,631.20-32,446.60-6,840.13

Finding the Fourth Proportional to 21,631.20, 32,446.60 and 6,840.13

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Solution

The fourth proportional to 21,631.20, 32,446.60 and 6,840.13 is: 10,260.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,631.20 : 32,446.60 = 6,840.13 : x
  2. Step 2: Convert to fraction form
    21,631.20/32,446.60 = 6,840.13/x
  3. Step 3: Cross multiply
    21,631.20x = 32,446.60 × 6,840.13
  4. Step 4: Simplify right side
    21,631.20x = 221,938,799.83
  5. Step 5: Solve for x
    x = 221,938,799.83/21,631.20
  6. Step 6: Final answer
    x = 10,260.12

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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.