Home / 10,110.20-15,149.10-6,643.40

Finding the Fourth Proportional to 10,110.20, 15,149.10 and 6,643.40

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Solution

The fourth proportional to 10,110.20, 15,149.10 and 6,643.40 is: 9,954.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,110.20 : 15,149.10 = 6,643.40 : x
  2. Step 2: Convert to fraction form
    10,110.20/15,149.10 = 6,643.40/x
  3. Step 3: Cross multiply
    10,110.20x = 15,149.10 × 6,643.40
  4. Step 4: Simplify right side
    10,110.20x = 100,641,530.94
  5. Step 5: Solve for x
    x = 100,641,530.94/10,110.20
  6. Step 6: Final answer
    x = 9,954.45

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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.