Home / 15,474.50-21,357.51-9,186.74

Finding the Fourth Proportional to 15,474.50, 21,357.51 and 9,186.74

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Solution

The fourth proportional to 15,474.50, 21,357.51 and 9,186.74 is: 12,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.50 : 21,357.51 = 9,186.74 : x
  2. Step 2: Convert to fraction form
    15,474.50/21,357.51 = 9,186.74/x
  3. Step 3: Cross multiply
    15,474.50x = 21,357.51 × 9,186.74
  4. Step 4: Simplify right side
    15,474.50x = 196,205,891.42
  5. Step 5: Solve for x
    x = 196,205,891.42/15,474.50
  6. Step 6: Final answer
    x = 12,679.30

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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.