Home / 20,513.52-28,307.84-11,562.88

Finding the Fourth Proportional to 20,513.52, 28,307.84 and 11,562.88

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Solution

The fourth proportional to 20,513.52, 28,307.84 and 11,562.88 is: 15,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.52 : 28,307.84 = 11,562.88 : x
  2. Step 2: Convert to fraction form
    20,513.52/28,307.84 = 11,562.88/x
  3. Step 3: Cross multiply
    20,513.52x = 28,307.84 × 11,562.88
  4. Step 4: Simplify right side
    20,513.52x = 327,320,156.98
  5. Step 5: Solve for x
    x = 327,320,156.98/20,513.52
  6. Step 6: Final answer
    x = 15,956.31

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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.