Home / 10,147.10-15,220.66-6,640.07

Finding the Fourth Proportional to 10,147.10, 15,220.66 and 6,640.07

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Solution

The fourth proportional to 10,147.10, 15,220.66 and 6,640.07 is: 9,960.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,147.10 : 15,220.66 = 6,640.07 : x
  2. Step 2: Convert to fraction form
    10,147.10/15,220.66 = 6,640.07/x
  3. Step 3: Cross multiply
    10,147.10x = 15,220.66 × 6,640.07
  4. Step 4: Simplify right side
    10,147.10x = 101,066,155.14
  5. Step 5: Solve for x
    x = 101,066,155.14/10,147.10
  6. Step 6: Final answer
    x = 9,960.10

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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.