Home / 12,632.16-18,961.56-7,090.20

Finding the Fourth Proportional to 12,632.16, 18,961.56 and 7,090.20

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Solution

The fourth proportional to 12,632.16, 18,961.56 and 7,090.20 is: 10,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,632.16 : 18,961.56 = 7,090.20 : x
  2. Step 2: Convert to fraction form
    12,632.16/18,961.56 = 7,090.20/x
  3. Step 3: Cross multiply
    12,632.16x = 18,961.56 × 7,090.20
  4. Step 4: Simplify right side
    12,632.16x = 134,441,252.71
  5. Step 5: Solve for x
    x = 134,441,252.71/12,632.16
  6. Step 6: Final answer
    x = 10,642.78

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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.