Home / 10,678.20-15,984.54-9,103.56

Finding the Fourth Proportional to 10,678.20, 15,984.54 and 9,103.56

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Solution

The fourth proportional to 10,678.20, 15,984.54 and 9,103.56 is: 13,627.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,678.20 : 15,984.54 = 9,103.56 : x
  2. Step 2: Convert to fraction form
    10,678.20/15,984.54 = 9,103.56/x
  3. Step 3: Cross multiply
    10,678.20x = 15,984.54 × 9,103.56
  4. Step 4: Simplify right side
    10,678.20x = 145,516,218.96
  5. Step 5: Solve for x
    x = 145,516,218.96/10,678.20
  6. Step 6: Final answer
    x = 13,627.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.