Home / 15,722.42-21,687.46-9,673.70

Finding the Fourth Proportional to 15,722.42, 21,687.46 and 9,673.70

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Solution

The fourth proportional to 15,722.42, 21,687.46 and 9,673.70 is: 13,343.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,722.42 : 21,687.46 = 9,673.70 : x
  2. Step 2: Convert to fraction form
    15,722.42/21,687.46 = 9,673.70/x
  3. Step 3: Cross multiply
    15,722.42x = 21,687.46 × 9,673.70
  4. Step 4: Simplify right side
    15,722.42x = 209,797,981.80
  5. Step 5: Solve for x
    x = 209,797,981.80/15,722.42
  6. Step 6: Final answer
    x = 13,343.87

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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.