Home / 15,432.21-21,296.52-8,358.66

Finding the Fourth Proportional to 15,432.21, 21,296.52 and 8,358.66

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Solution

The fourth proportional to 15,432.21, 21,296.52 and 8,358.66 is: 11,534.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.21 : 21,296.52 = 8,358.66 : x
  2. Step 2: Convert to fraction form
    15,432.21/21,296.52 = 8,358.66/x
  3. Step 3: Cross multiply
    15,432.21x = 21,296.52 × 8,358.66
  4. Step 4: Simplify right side
    15,432.21x = 178,010,369.86
  5. Step 5: Solve for x
    x = 178,010,369.86/15,432.21
  6. Step 6: Final answer
    x = 11,534.99

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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.