Home / 25,220.33-34,827.68-15,805.30

Finding the Fourth Proportional to 25,220.33, 34,827.68 and 15,805.30

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Solution

The fourth proportional to 25,220.33, 34,827.68 and 15,805.30 is: 21,826.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,220.33 : 34,827.68 = 15,805.30 : x
  2. Step 2: Convert to fraction form
    25,220.33/34,827.68 = 15,805.30/x
  3. Step 3: Cross multiply
    25,220.33x = 34,827.68 × 15,805.30
  4. Step 4: Simplify right side
    25,220.33x = 550,461,930.70
  5. Step 5: Solve for x
    x = 550,461,930.70/25,220.33
  6. Step 6: Final answer
    x = 21,826.12

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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.