Home / 10,987.05-15,161.81-6,207.22

Finding the Fourth Proportional to 10,987.05, 15,161.81 and 6,207.22

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Solution

The fourth proportional to 10,987.05, 15,161.81 and 6,207.22 is: 8,565.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.05 : 15,161.81 = 6,207.22 : x
  2. Step 2: Convert to fraction form
    10,987.05/15,161.81 = 6,207.22/x
  3. Step 3: Cross multiply
    10,987.05x = 15,161.81 × 6,207.22
  4. Step 4: Simplify right side
    10,987.05x = 94,112,621.33
  5. Step 5: Solve for x
    x = 94,112,621.33/10,987.05
  6. Step 6: Final answer
    x = 8,565.78

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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.