Home / 21,251.52-29,265.84-21,186.72

Finding the Fourth Proportional to 21,251.52, 29,265.84 and 21,186.72

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Solution

The fourth proportional to 21,251.52, 29,265.84 and 21,186.72 is: 29,176.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.52 : 29,265.84 = 21,186.72 : x
  2. Step 2: Convert to fraction form
    21,251.52/29,265.84 = 21,186.72/x
  3. Step 3: Cross multiply
    21,251.52x = 29,265.84 × 21,186.72
  4. Step 4: Simplify right side
    21,251.52x = 620,047,157.64
  5. Step 5: Solve for x
    x = 620,047,157.64/21,251.52
  6. Step 6: Final answer
    x = 29,176.60

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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.