Home / 22,961.90-31,685.25-12,888.37

Finding the Fourth Proportional to 22,961.90, 31,685.25 and 12,888.37

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Solution

The fourth proportional to 22,961.90, 31,685.25 and 12,888.37 is: 17,784.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,961.90 : 31,685.25 = 12,888.37 : x
  2. Step 2: Convert to fraction form
    22,961.90/31,685.25 = 12,888.37/x
  3. Step 3: Cross multiply
    22,961.90x = 31,685.25 × 12,888.37
  4. Step 4: Simplify right side
    22,961.90x = 408,371,340.29
  5. Step 5: Solve for x
    x = 408,371,340.29/22,961.90
  6. Step 6: Final answer
    x = 17,784.74

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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.