Home / 13,521.47-18,659.70-7,553.66

Finding the Fourth Proportional to 13,521.47, 18,659.70 and 7,553.66

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Solution

The fourth proportional to 13,521.47, 18,659.70 and 7,553.66 is: 10,424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.47 : 18,659.70 = 7,553.66 : x
  2. Step 2: Convert to fraction form
    13,521.47/18,659.70 = 7,553.66/x
  3. Step 3: Cross multiply
    13,521.47x = 18,659.70 × 7,553.66
  4. Step 4: Simplify right side
    13,521.47x = 140,948,936.20
  5. Step 5: Solve for x
    x = 140,948,936.20/13,521.47
  6. Step 6: Final answer
    x = 10,424.09

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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.