Home / 10,985.27-15,154.80-8,634.24

Finding the Fourth Proportional to 10,985.27, 15,154.80 and 8,634.24

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Solution

The fourth proportional to 10,985.27, 15,154.80 and 8,634.24 is: 11,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.27 : 15,154.80 = 8,634.24 : x
  2. Step 2: Convert to fraction form
    10,985.27/15,154.80 = 8,634.24/x
  3. Step 3: Cross multiply
    10,985.27x = 15,154.80 × 8,634.24
  4. Step 4: Simplify right side
    10,985.27x = 130,850,180.35
  5. Step 5: Solve for x
    x = 130,850,180.35/10,985.27
  6. Step 6: Final answer
    x = 11,911.43

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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.