Home / 10,109.10-15,147.45-6,404.70

Finding the Fourth Proportional to 10,109.10, 15,147.45 and 6,404.70

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Solution

The fourth proportional to 10,109.10, 15,147.45 and 6,404.70 is: 9,596.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.10 : 15,147.45 = 6,404.70 : x
  2. Step 2: Convert to fraction form
    10,109.10/15,147.45 = 6,404.70/x
  3. Step 3: Cross multiply
    10,109.10x = 15,147.45 × 6,404.70
  4. Step 4: Simplify right side
    10,109.10x = 97,014,873.02
  5. Step 5: Solve for x
    x = 97,014,873.02/10,109.10
  6. Step 6: Final answer
    x = 9,596.79

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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.