Home / 13,521.87-18,658.53-7,553.34

Finding the Fourth Proportional to 13,521.87, 18,658.53 and 7,553.34

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Solution

The fourth proportional to 13,521.87, 18,658.53 and 7,553.34 is: 10,422.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.87 : 18,658.53 = 7,553.34 : x
  2. Step 2: Convert to fraction form
    13,521.87/18,658.53 = 7,553.34/x
  3. Step 3: Cross multiply
    13,521.87x = 18,658.53 × 7,553.34
  4. Step 4: Simplify right side
    13,521.87x = 140,934,220.99
  5. Step 5: Solve for x
    x = 140,934,220.99/13,521.87
  6. Step 6: Final answer
    x = 10,422.69

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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.