Home / 15,422.57-21,283.29-8,349.14

Finding the Fourth Proportional to 15,422.57, 21,283.29 and 8,349.14

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Solution

The fourth proportional to 15,422.57, 21,283.29 and 8,349.14 is: 11,521.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.57 : 21,283.29 = 8,349.14 : x
  2. Step 2: Convert to fraction form
    15,422.57/21,283.29 = 8,349.14/x
  3. Step 3: Cross multiply
    15,422.57x = 21,283.29 × 8,349.14
  4. Step 4: Simplify right side
    15,422.57x = 177,697,167.87
  5. Step 5: Solve for x
    x = 177,697,167.87/15,422.57
  6. Step 6: Final answer
    x = 11,521.89

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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.