Home / 13,521.29-18,659.45-7,553.21

Finding the Fourth Proportional to 13,521.29, 18,659.45 and 7,553.21

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Solution

The fourth proportional to 13,521.29, 18,659.45 and 7,553.21 is: 10,423.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.29 : 18,659.45 = 7,553.21 : x
  2. Step 2: Convert to fraction form
    13,521.29/18,659.45 = 7,553.21/x
  3. Step 3: Cross multiply
    13,521.29x = 18,659.45 × 7,553.21
  4. Step 4: Simplify right side
    13,521.29x = 140,938,706.57
  5. Step 5: Solve for x
    x = 140,938,706.57/13,521.29
  6. Step 6: Final answer
    x = 10,423.47

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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.