Home / 21,160.61-31,761.56-10,074.95

Finding the Fourth Proportional to 21,160.61, 31,761.56 and 10,074.95

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Solution

The fourth proportional to 21,160.61, 31,761.56 and 10,074.95 is: 15,122.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.61 : 31,761.56 = 10,074.95 : x
  2. Step 2: Convert to fraction form
    21,160.61/31,761.56 = 10,074.95/x
  3. Step 3: Cross multiply
    21,160.61x = 31,761.56 × 10,074.95
  4. Step 4: Simplify right side
    21,160.61x = 319,996,128.92
  5. Step 5: Solve for x
    x = 319,996,128.92/21,160.61
  6. Step 6: Final answer
    x = 15,122.25

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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.