Home / 21,918.30-30,244.23-12,356.97

Finding the Fourth Proportional to 21,918.30, 30,244.23 and 12,356.97

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Solution

The fourth proportional to 21,918.30, 30,244.23 and 12,356.97 is: 17,050.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,918.30 : 30,244.23 = 12,356.97 : x
  2. Step 2: Convert to fraction form
    21,918.30/30,244.23 = 12,356.97/x
  3. Step 3: Cross multiply
    21,918.30x = 30,244.23 × 12,356.97
  4. Step 4: Simplify right side
    21,918.30x = 373,727,042.78
  5. Step 5: Solve for x
    x = 373,727,042.78/21,918.30
  6. Step 6: Final answer
    x = 17,050.91

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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.