Home / 11,649.12-17,389.10-10,781.79

Finding the Fourth Proportional to 11,649.12, 17,389.10 and 10,781.79

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Solution

The fourth proportional to 11,649.12, 17,389.10 and 10,781.79 is: 16,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,649.12 : 17,389.10 = 10,781.79 : x
  2. Step 2: Convert to fraction form
    11,649.12/17,389.10 = 10,781.79/x
  3. Step 3: Cross multiply
    11,649.12x = 17,389.10 × 10,781.79
  4. Step 4: Simplify right side
    11,649.12x = 187,485,570.58
  5. Step 5: Solve for x
    x = 187,485,570.58/11,649.12
  6. Step 6: Final answer
    x = 16,094.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.