Home / 11,781.40-16,243.18-9,649.08

Finding the Fourth Proportional to 11,781.40, 16,243.18 and 9,649.08

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Solution

The fourth proportional to 11,781.40, 16,243.18 and 9,649.08 is: 13,303.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.40 : 16,243.18 = 9,649.08 : x
  2. Step 2: Convert to fraction form
    11,781.40/16,243.18 = 9,649.08/x
  3. Step 3: Cross multiply
    11,781.40x = 16,243.18 × 9,649.08
  4. Step 4: Simplify right side
    11,781.40x = 156,731,743.27
  5. Step 5: Solve for x
    x = 156,731,743.27/11,781.40
  6. Step 6: Final answer
    x = 13,303.32

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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.