Home / 13,521.45-18,660.54-7,553.98

Finding the Fourth Proportional to 13,521.45, 18,660.54 and 7,553.98

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Solution

The fourth proportional to 13,521.45, 18,660.54 and 7,553.98 is: 10,425.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.45 : 18,660.54 = 7,553.98 : x
  2. Step 2: Convert to fraction form
    13,521.45/18,660.54 = 7,553.98/x
  3. Step 3: Cross multiply
    13,521.45x = 18,660.54 × 7,553.98
  4. Step 4: Simplify right side
    13,521.45x = 140,961,345.95
  5. Step 5: Solve for x
    x = 140,961,345.95/13,521.45
  6. Step 6: Final answer
    x = 10,425.02

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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.