Home / 21,543.16-29,726.34-12,109.92

Finding the Fourth Proportional to 21,543.16, 29,726.34 and 12,109.92

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Solution

The fourth proportional to 21,543.16, 29,726.34 and 12,109.92 is: 16,709.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,543.16 : 29,726.34 = 12,109.92 : x
  2. Step 2: Convert to fraction form
    21,543.16/29,726.34 = 12,109.92/x
  3. Step 3: Cross multiply
    21,543.16x = 29,726.34 × 12,109.92
  4. Step 4: Simplify right side
    21,543.16x = 359,983,599.29
  5. Step 5: Solve for x
    x = 359,983,599.29/21,543.16
  6. Step 6: Final answer
    x = 16,709.88

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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.