Home / 13,390.16-18,469.75-10,553.13

Finding the Fourth Proportional to 13,390.16, 18,469.75 and 10,553.13

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Solution

The fourth proportional to 13,390.16, 18,469.75 and 10,553.13 is: 14,556.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.16 : 18,469.75 = 10,553.13 : x
  2. Step 2: Convert to fraction form
    13,390.16/18,469.75 = 10,553.13/x
  3. Step 3: Cross multiply
    13,390.16x = 18,469.75 × 10,553.13
  4. Step 4: Simplify right side
    13,390.16x = 194,913,672.82
  5. Step 5: Solve for x
    x = 194,913,672.82/13,390.16
  6. Step 6: Final answer
    x = 14,556.49

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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.