Home / 13,521.76-18,659.96-7,553.42

Finding the Fourth Proportional to 13,521.76, 18,659.96 and 7,553.42

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Solution

The fourth proportional to 13,521.76, 18,659.96 and 7,553.42 is: 10,423.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.76 : 18,659.96 = 7,553.42 : x
  2. Step 2: Convert to fraction form
    13,521.76/18,659.96 = 7,553.42/x
  3. Step 3: Cross multiply
    13,521.76x = 18,659.96 × 7,553.42
  4. Step 4: Simplify right side
    13,521.76x = 140,946,515.06
  5. Step 5: Solve for x
    x = 140,946,515.06/13,521.76
  6. Step 6: Final answer
    x = 10,423.68

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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.