Home / 26,678.46-39,930.77-19,655.66

Finding the Fourth Proportional to 26,678.46, 39,930.77 and 19,655.66

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Solution

The fourth proportional to 26,678.46, 39,930.77 and 19,655.66 is: 29,419.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,678.46 : 39,930.77 = 19,655.66 : x
  2. Step 2: Convert to fraction form
    26,678.46/39,930.77 = 19,655.66/x
  3. Step 3: Cross multiply
    26,678.46x = 39,930.77 × 19,655.66
  4. Step 4: Simplify right side
    26,678.46x = 784,865,787.62
  5. Step 5: Solve for x
    x = 784,865,787.62/26,678.46
  6. Step 6: Final answer
    x = 29,419.45

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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.