Home / 15,432.93-21,295.85-8,719.29

Finding the Fourth Proportional to 15,432.93, 21,295.85 and 8,719.29

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Solution

The fourth proportional to 15,432.93, 21,295.85 and 8,719.29 is: 12,031.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.93 : 21,295.85 = 8,719.29 : x
  2. Step 2: Convert to fraction form
    15,432.93/21,295.85 = 8,719.29/x
  3. Step 3: Cross multiply
    15,432.93x = 21,295.85 × 8,719.29
  4. Step 4: Simplify right side
    15,432.93x = 185,684,648.35
  5. Step 5: Solve for x
    x = 185,684,648.35/15,432.93
  6. Step 6: Final answer
    x = 12,031.72

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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.