Home / 15,432.12-21,296.30-8,717.42

Finding the Fourth Proportional to 15,432.12, 21,296.30 and 8,717.42

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Solution

The fourth proportional to 15,432.12, 21,296.30 and 8,717.42 is: 12,030.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.12 : 21,296.30 = 8,717.42 : x
  2. Step 2: Convert to fraction form
    15,432.12/21,296.30 = 8,717.42/x
  3. Step 3: Cross multiply
    15,432.12x = 21,296.30 × 8,717.42
  4. Step 4: Simplify right side
    15,432.12x = 185,648,791.55
  5. Step 5: Solve for x
    x = 185,648,791.55/15,432.12
  6. Step 6: Final answer
    x = 12,030.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.