Home / 19,178.28-28,761.90-8,087.46

Finding the Fourth Proportional to 19,178.28, 28,761.90 and 8,087.46

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Solution

The fourth proportional to 19,178.28, 28,761.90 and 8,087.46 is: 12,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,178.28 : 28,761.90 = 8,087.46 : x
  2. Step 2: Convert to fraction form
    19,178.28/28,761.90 = 8,087.46/x
  3. Step 3: Cross multiply
    19,178.28x = 28,761.90 × 8,087.46
  4. Step 4: Simplify right side
    19,178.28x = 232,610,715.77
  5. Step 5: Solve for x
    x = 232,610,715.77/19,178.28
  6. Step 6: Final answer
    x = 12,128.86

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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.