Home / 21,184.10-31,755.49-10,087.81

Finding the Fourth Proportional to 21,184.10, 31,755.49 and 10,087.81

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Solution

The fourth proportional to 21,184.10, 31,755.49 and 10,087.81 is: 15,121.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,184.10 : 31,755.49 = 10,087.81 : x
  2. Step 2: Convert to fraction form
    21,184.10/31,755.49 = 10,087.81/x
  3. Step 3: Cross multiply
    21,184.10x = 31,755.49 × 10,087.81
  4. Step 4: Simplify right side
    21,184.10x = 320,343,349.58
  5. Step 5: Solve for x
    x = 320,343,349.58/21,184.10
  6. Step 6: Final answer
    x = 15,121.88

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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.