Home / 15,422.85-21,283.65-8,349.39

Finding the Fourth Proportional to 15,422.85, 21,283.65 and 8,349.39

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Solution

The fourth proportional to 15,422.85, 21,283.65 and 8,349.39 is: 11,522.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.85 : 21,283.65 = 8,349.39 : x
  2. Step 2: Convert to fraction form
    15,422.85/21,283.65 = 8,349.39/x
  3. Step 3: Cross multiply
    15,422.85x = 21,283.65 × 8,349.39
  4. Step 4: Simplify right side
    15,422.85x = 177,705,494.47
  5. Step 5: Solve for x
    x = 177,705,494.47/15,422.85
  6. Step 6: Final answer
    x = 11,522.22

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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.