Home / 20,032.45-27,642.66-11,078.53

Finding the Fourth Proportional to 20,032.45, 27,642.66 and 11,078.53

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Solution

The fourth proportional to 20,032.45, 27,642.66 and 11,078.53 is: 15,287.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,032.45 : 27,642.66 = 11,078.53 : x
  2. Step 2: Convert to fraction form
    20,032.45/27,642.66 = 11,078.53/x
  3. Step 3: Cross multiply
    20,032.45x = 27,642.66 × 11,078.53
  4. Step 4: Simplify right side
    20,032.45x = 306,240,038.09
  5. Step 5: Solve for x
    x = 306,240,038.09/20,032.45
  6. Step 6: Final answer
    x = 15,287.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.