Home / 21,158.28-29,197.98-11,726.64

Finding the Fourth Proportional to 21,158.28, 29,197.98 and 11,726.64

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Solution

The fourth proportional to 21,158.28, 29,197.98 and 11,726.64 is: 16,182.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.28 : 29,197.98 = 11,726.64 : x
  2. Step 2: Convert to fraction form
    21,158.28/29,197.98 = 11,726.64/x
  3. Step 3: Cross multiply
    21,158.28x = 29,197.98 × 11,726.64
  4. Step 4: Simplify right side
    21,158.28x = 342,394,200.19
  5. Step 5: Solve for x
    x = 342,394,200.19/21,158.28
  6. Step 6: Final answer
    x = 16,182.52

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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.