Home / 21,938.67-30,275.36-11,867.11

Finding the Fourth Proportional to 21,938.67, 30,275.36 and 11,867.11

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Solution

The fourth proportional to 21,938.67, 30,275.36 and 11,867.11 is: 16,376.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.67 : 30,275.36 = 11,867.11 : x
  2. Step 2: Convert to fraction form
    21,938.67/30,275.36 = 11,867.11/x
  3. Step 3: Cross multiply
    21,938.67x = 30,275.36 × 11,867.11
  4. Step 4: Simplify right side
    21,938.67x = 359,280,876.03
  5. Step 5: Solve for x
    x = 359,280,876.03/21,938.67
  6. Step 6: Final answer
    x = 16,376.61

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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.