Home / 20,726.64-28,595.16-13,278.96

Finding the Fourth Proportional to 20,726.64, 28,595.16 and 13,278.96

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Solution

The fourth proportional to 20,726.64, 28,595.16 and 13,278.96 is: 18,320.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.64 : 28,595.16 = 13,278.96 : x
  2. Step 2: Convert to fraction form
    20,726.64/28,595.16 = 13,278.96/x
  3. Step 3: Cross multiply
    20,726.64x = 28,595.16 × 13,278.96
  4. Step 4: Simplify right side
    20,726.64x = 379,713,985.83
  5. Step 5: Solve for x
    x = 379,713,985.83/20,726.64
  6. Step 6: Final answer
    x = 18,320.09

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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.