Home / 15,330.06-21,165.30-9,672.48

Finding the Fourth Proportional to 15,330.06, 21,165.30 and 9,672.48

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Solution

The fourth proportional to 15,330.06, 21,165.30 and 9,672.48 is: 13,354.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.06 : 21,165.30 = 9,672.48 : x
  2. Step 2: Convert to fraction form
    15,330.06/21,165.30 = 9,672.48/x
  3. Step 3: Cross multiply
    15,330.06x = 21,165.30 × 9,672.48
  4. Step 4: Simplify right side
    15,330.06x = 204,720,940.94
  5. Step 5: Solve for x
    x = 204,720,940.94/15,330.06
  6. Step 6: Final answer
    x = 13,354.22

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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.