Home / 21,003.52-28,986.50-11,573.76

Finding the Fourth Proportional to 21,003.52, 28,986.50 and 11,573.76

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Solution

The fourth proportional to 21,003.52, 28,986.50 and 11,573.76 is: 15,972.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.52 : 28,986.50 = 11,573.76 : x
  2. Step 2: Convert to fraction form
    21,003.52/28,986.50 = 11,573.76/x
  3. Step 3: Cross multiply
    21,003.52x = 28,986.50 × 11,573.76
  4. Step 4: Simplify right side
    21,003.52x = 335,482,794.24
  5. Step 5: Solve for x
    x = 335,482,794.24/21,003.52
  6. Step 6: Final answer
    x = 15,972.69

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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.