Home / 19,731.95-27,219.97-13,358.76

Finding the Fourth Proportional to 19,731.95, 27,219.97 and 13,358.76

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Solution

The fourth proportional to 19,731.95, 27,219.97 and 13,358.76 is: 18,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,731.95 : 27,219.97 = 13,358.76 : x
  2. Step 2: Convert to fraction form
    19,731.95/27,219.97 = 13,358.76/x
  3. Step 3: Cross multiply
    19,731.95x = 27,219.97 × 13,358.76
  4. Step 4: Simplify right side
    19,731.95x = 363,625,165.21
  5. Step 5: Solve for x
    x = 363,625,165.21/19,731.95
  6. Step 6: Final answer
    x = 18,428.25

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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.