Home / 39,731.76-59,605.32-13,440.78

Finding the Fourth Proportional to 39,731.76, 59,605.32 and 13,440.78

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Solution

The fourth proportional to 39,731.76, 59,605.32 and 13,440.78 is: 20,163.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,731.76 : 59,605.32 = 13,440.78 : x
  2. Step 2: Convert to fraction form
    39,731.76/59,605.32 = 13,440.78/x
  3. Step 3: Cross multiply
    39,731.76x = 59,605.32 × 13,440.78
  4. Step 4: Simplify right side
    39,731.76x = 801,141,992.95
  5. Step 5: Solve for x
    x = 801,141,992.95/39,731.76
  6. Step 6: Final answer
    x = 20,163.77

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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.