Home / 22,638.28-31,240.25-12,429.26

Finding the Fourth Proportional to 22,638.28, 31,240.25 and 12,429.26

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Solution

The fourth proportional to 22,638.28, 31,240.25 and 12,429.26 is: 17,152.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,638.28 : 31,240.25 = 12,429.26 : x
  2. Step 2: Convert to fraction form
    22,638.28/31,240.25 = 12,429.26/x
  3. Step 3: Cross multiply
    22,638.28x = 31,240.25 × 12,429.26
  4. Step 4: Simplify right side
    22,638.28x = 388,293,257.95
  5. Step 5: Solve for x
    x = 388,293,257.95/22,638.28
  6. Step 6: Final answer
    x = 17,152.07

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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.