Home / 27,726.94-38,251.74-20,156.68

Finding the Fourth Proportional to 27,726.94, 38,251.74 and 20,156.68

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Solution

The fourth proportional to 27,726.94, 38,251.74 and 20,156.68 is: 27,807.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,726.94 : 38,251.74 = 20,156.68 : x
  2. Step 2: Convert to fraction form
    27,726.94/38,251.74 = 20,156.68/x
  3. Step 3: Cross multiply
    27,726.94x = 38,251.74 × 20,156.68
  4. Step 4: Simplify right side
    27,726.94x = 771,028,082.62
  5. Step 5: Solve for x
    x = 771,028,082.62/27,726.94
  6. Step 6: Final answer
    x = 27,807.90

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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.