Home / 10,988.78-15,165.44-6,209.60

Finding the Fourth Proportional to 10,988.78, 15,165.44 and 6,209.60

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Solution

The fourth proportional to 10,988.78, 15,165.44 and 6,209.60 is: 8,569.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.78 : 15,165.44 = 6,209.60 : x
  2. Step 2: Convert to fraction form
    10,988.78/15,165.44 = 6,209.60/x
  3. Step 3: Cross multiply
    10,988.78x = 15,165.44 × 6,209.60
  4. Step 4: Simplify right side
    10,988.78x = 94,171,267.56
  5. Step 5: Solve for x
    x = 94,171,267.56/10,988.78
  6. Step 6: Final answer
    x = 8,569.76

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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.