Home / 15,759.30-23,610.15-12,821.70

Finding the Fourth Proportional to 15,759.30, 23,610.15 and 12,821.70

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Solution

The fourth proportional to 15,759.30, 23,610.15 and 12,821.70 is: 19,209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,759.30 : 23,610.15 = 12,821.70 : x
  2. Step 2: Convert to fraction form
    15,759.30/23,610.15 = 12,821.70/x
  3. Step 3: Cross multiply
    15,759.30x = 23,610.15 × 12,821.70
  4. Step 4: Simplify right side
    15,759.30x = 302,722,260.26
  5. Step 5: Solve for x
    x = 302,722,260.26/15,759.30
  6. Step 6: Final answer
    x = 19,209.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.