Home / 15,330.44-21,155.88-8,616.20

Finding the Fourth Proportional to 15,330.44, 21,155.88 and 8,616.20

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Solution

The fourth proportional to 15,330.44, 21,155.88 and 8,616.20 is: 11,890.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.44 : 21,155.88 = 8,616.20 : x
  2. Step 2: Convert to fraction form
    15,330.44/21,155.88 = 8,616.20/x
  3. Step 3: Cross multiply
    15,330.44x = 21,155.88 × 8,616.20
  4. Step 4: Simplify right side
    15,330.44x = 182,283,293.26
  5. Step 5: Solve for x
    x = 182,283,293.26/15,330.44
  6. Step 6: Final answer
    x = 11,890.28

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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.