Home / 21,627.12-32,440.68-9,315.12

Finding the Fourth Proportional to 21,627.12, 32,440.68 and 9,315.12

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Solution

The fourth proportional to 21,627.12, 32,440.68 and 9,315.12 is: 13,972.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627.12 : 32,440.68 = 9,315.12 : x
  2. Step 2: Convert to fraction form
    21,627.12/32,440.68 = 9,315.12/x
  3. Step 3: Cross multiply
    21,627.12x = 32,440.68 × 9,315.12
  4. Step 4: Simplify right side
    21,627.12x = 302,188,827.08
  5. Step 5: Solve for x
    x = 302,188,827.08/21,627.12
  6. Step 6: Final answer
    x = 13,972.68

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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.