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Finding the Fourth Proportional to 13,959.52, 19,264.20 and 7,672.30

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Solution

The fourth proportional to 13,959.52, 19,264.20 and 7,672.30 is: 10,587.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,959.52 : 19,264.20 = 7,672.30 : x
  2. Step 2: Convert to fraction form
    13,959.52/19,264.20 = 7,672.30/x
  3. Step 3: Cross multiply
    13,959.52x = 19,264.20 × 7,672.30
  4. Step 4: Simplify right side
    13,959.52x = 147,800,721.66
  5. Step 5: Solve for x
    x = 147,800,721.66/13,959.52
  6. Step 6: Final answer
    x = 10,587.81

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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.