Home / 26,654.40-39,981.79-18,309.12

Finding the Fourth Proportional to 26,654.40, 39,981.79 and 18,309.12

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Solution

The fourth proportional to 26,654.40, 39,981.79 and 18,309.12 is: 27,463.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,654.40 : 39,981.79 = 18,309.12 : x
  2. Step 2: Convert to fraction form
    26,654.40/39,981.79 = 18,309.12/x
  3. Step 3: Cross multiply
    26,654.40x = 39,981.79 × 18,309.12
  4. Step 4: Simplify right side
    26,654.40x = 732,031,390.92
  5. Step 5: Solve for x
    x = 732,031,390.92/26,654.40
  6. Step 6: Final answer
    x = 27,463.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.