Home / 28,352.64-42,514.36-12,761.76

Finding the Fourth Proportional to 28,352.64, 42,514.36 and 12,761.76

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Solution

The fourth proportional to 28,352.64, 42,514.36 and 12,761.76 is: 19,136.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,352.64 : 42,514.36 = 12,761.76 : x
  2. Step 2: Convert to fraction form
    28,352.64/42,514.36 = 12,761.76/x
  3. Step 3: Cross multiply
    28,352.64x = 42,514.36 × 12,761.76
  4. Step 4: Simplify right side
    28,352.64x = 542,558,058.87
  5. Step 5: Solve for x
    x = 542,558,058.87/28,352.64
  6. Step 6: Final answer
    x = 19,136.07

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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.