Home / 20,761.86-31,141.76-5,970.66

Finding the Fourth Proportional to 20,761.86, 31,141.76 and 5,970.66

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Solution

The fourth proportional to 20,761.86, 31,141.76 and 5,970.66 is: 8,955.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.86 : 31,141.76 = 5,970.66 : x
  2. Step 2: Convert to fraction form
    20,761.86/31,141.76 = 5,970.66/x
  3. Step 3: Cross multiply
    20,761.86x = 31,141.76 × 5,970.66
  4. Step 4: Simplify right side
    20,761.86x = 185,936,860.76
  5. Step 5: Solve for x
    x = 185,936,860.76/20,761.86
  6. Step 6: Final answer
    x = 8,955.69

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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.