Home / 15,615.17-21,557.85-10,325.33

Finding the Fourth Proportional to 15,615.17, 21,557.85 and 10,325.33

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Solution

The fourth proportional to 15,615.17, 21,557.85 and 10,325.33 is: 14,254.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,615.17 : 21,557.85 = 10,325.33 : x
  2. Step 2: Convert to fraction form
    15,615.17/21,557.85 = 10,325.33/x
  3. Step 3: Cross multiply
    15,615.17x = 21,557.85 × 10,325.33
  4. Step 4: Simplify right side
    15,615.17x = 222,591,915.34
  5. Step 5: Solve for x
    x = 222,591,915.34/15,615.17
  6. Step 6: Final answer
    x = 14,254.85

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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.