Home / 21,116.23-29,113.92-13,549.21

Finding the Fourth Proportional to 21,116.23, 29,113.92 and 13,549.21

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Solution

The fourth proportional to 21,116.23, 29,113.92 and 13,549.21 is: 18,680.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.23 : 29,113.92 = 13,549.21 : x
  2. Step 2: Convert to fraction form
    21,116.23/29,113.92 = 13,549.21/x
  3. Step 3: Cross multiply
    21,116.23x = 29,113.92 × 13,549.21
  4. Step 4: Simplify right side
    21,116.23x = 394,470,543.22
  5. Step 5: Solve for x
    x = 394,470,543.22/21,116.23
  6. Step 6: Final answer
    x = 18,680.92

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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.