Home / 21,141.28-31,713.54-5,558.50

Finding the Fourth Proportional to 21,141.28, 31,713.54 and 5,558.50

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Solution

The fourth proportional to 21,141.28, 31,713.54 and 5,558.50 is: 8,338.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.28 : 31,713.54 = 5,558.50 : x
  2. Step 2: Convert to fraction form
    21,141.28/31,713.54 = 5,558.50/x
  3. Step 3: Cross multiply
    21,141.28x = 31,713.54 × 5,558.50
  4. Step 4: Simplify right side
    21,141.28x = 176,279,712.09
  5. Step 5: Solve for x
    x = 176,279,712.09/21,141.28
  6. Step 6: Final answer
    x = 8,338.18

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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.