Home / 15,401.61-21,234.96-12,853.04

Finding the Fourth Proportional to 15,401.61, 21,234.96 and 12,853.04

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Solution

The fourth proportional to 15,401.61, 21,234.96 and 12,853.04 is: 17,721.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,401.61 : 21,234.96 = 12,853.04 : x
  2. Step 2: Convert to fraction form
    15,401.61/21,234.96 = 12,853.04/x
  3. Step 3: Cross multiply
    15,401.61x = 21,234.96 × 12,853.04
  4. Step 4: Simplify right side
    15,401.61x = 272,933,684.10
  5. Step 5: Solve for x
    x = 272,933,684.10/15,401.61
  6. Step 6: Final answer
    x = 17,721.11

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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.