Home / 21,184.86-31,777.61-10,092.70

Finding the Fourth Proportional to 21,184.86, 31,777.61 and 10,092.70

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Solution

The fourth proportional to 21,184.86, 31,777.61 and 10,092.70 is: 15,139.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.86 : 31,777.61 = 10,092.70 : x
  2. Step 2: Convert to fraction form
    21,184.86/31,777.61 = 10,092.70/x
  3. Step 3: Cross multiply
    21,184.86x = 31,777.61 × 10,092.70
  4. Step 4: Simplify right side
    21,184.86x = 320,721,884.45
  5. Step 5: Solve for x
    x = 320,721,884.45/21,184.86
  6. Step 6: Final answer
    x = 15,139.20

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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.