Home / 15,310.24-21,124.56-11,111.20

Finding the Fourth Proportional to 15,310.24, 21,124.56 and 11,111.20

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Solution

The fourth proportional to 15,310.24, 21,124.56 and 11,111.20 is: 15,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.24 : 21,124.56 = 11,111.20 : x
  2. Step 2: Convert to fraction form
    15,310.24/21,124.56 = 11,111.20/x
  3. Step 3: Cross multiply
    15,310.24x = 21,124.56 × 11,111.20
  4. Step 4: Simplify right side
    15,310.24x = 234,719,211.07
  5. Step 5: Solve for x
    x = 234,719,211.07/15,310.24
  6. Step 6: Final answer
    x = 15,330.86

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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.