Home / 21,612.05-32,421.54-9,132.20

Finding the Fourth Proportional to 21,612.05, 32,421.54 and 9,132.20

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Solution

The fourth proportional to 21,612.05, 32,421.54 and 9,132.20 is: 13,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,612.05 : 32,421.54 = 9,132.20 : x
  2. Step 2: Convert to fraction form
    21,612.05/32,421.54 = 9,132.20/x
  3. Step 3: Cross multiply
    21,612.05x = 32,421.54 × 9,132.20
  4. Step 4: Simplify right side
    21,612.05x = 296,079,987.59
  5. Step 5: Solve for x
    x = 296,079,987.59/21,612.05
  6. Step 6: Final answer
    x = 13,699.76

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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.