Home / 28,102.52-38,779.82-15,353.17

Finding the Fourth Proportional to 28,102.52, 38,779.82 and 15,353.17

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Solution

The fourth proportional to 28,102.52, 38,779.82 and 15,353.17 is: 21,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.52 : 38,779.82 = 15,353.17 : x
  2. Step 2: Convert to fraction form
    28,102.52/38,779.82 = 15,353.17/x
  3. Step 3: Cross multiply
    28,102.52x = 38,779.82 × 15,353.17
  4. Step 4: Simplify right side
    28,102.52x = 595,393,122.92
  5. Step 5: Solve for x
    x = 595,393,122.92/28,102.52
  6. Step 6: Final answer
    x = 21,186.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.