Home / 20,167.67-27,831.65-11,215.95

Finding the Fourth Proportional to 20,167.67, 27,831.65 and 11,215.95

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Solution

The fourth proportional to 20,167.67, 27,831.65 and 11,215.95 is: 15,478.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.67 : 27,831.65 = 11,215.95 : x
  2. Step 2: Convert to fraction form
    20,167.67/27,831.65 = 11,215.95/x
  3. Step 3: Cross multiply
    20,167.67x = 27,831.65 × 11,215.95
  4. Step 4: Simplify right side
    20,167.67x = 312,158,338.74
  5. Step 5: Solve for x
    x = 312,158,338.74/20,167.67
  6. Step 6: Final answer
    x = 15,478.16

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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.