Home / 20,280.16-27,986.54-11,327.66

Finding the Fourth Proportional to 20,280.16, 27,986.54 and 11,327.66

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Solution

The fourth proportional to 20,280.16, 27,986.54 and 11,327.66 is: 15,632.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.16 : 27,986.54 = 11,327.66 : x
  2. Step 2: Convert to fraction form
    20,280.16/27,986.54 = 11,327.66/x
  3. Step 3: Cross multiply
    20,280.16x = 27,986.54 × 11,327.66
  4. Step 4: Simplify right side
    20,280.16x = 317,022,009.70
  5. Step 5: Solve for x
    x = 317,022,009.70/20,280.16
  6. Step 6: Final answer
    x = 15,632.13

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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.