Home / 15,432.74-21,296.78-8,718.38

Finding the Fourth Proportional to 15,432.74, 21,296.78 and 8,718.38

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Solution

The fourth proportional to 15,432.74, 21,296.78 and 8,718.38 is: 12,031.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.74 : 21,296.78 = 8,718.38 : x
  2. Step 2: Convert to fraction form
    15,432.74/21,296.78 = 8,718.38/x
  3. Step 3: Cross multiply
    15,432.74x = 21,296.78 × 8,718.38
  4. Step 4: Simplify right side
    15,432.74x = 185,673,420.82
  5. Step 5: Solve for x
    x = 185,673,420.82/15,432.74
  6. Step 6: Final answer
    x = 12,031.14

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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.