Home / 15,027.30-22,521.78-7,129.80

Finding the Fourth Proportional to 15,027.30, 22,521.78 and 7,129.80

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Solution

The fourth proportional to 15,027.30, 22,521.78 and 7,129.80 is: 10,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.30 : 22,521.78 = 7,129.80 : x
  2. Step 2: Convert to fraction form
    15,027.30/22,521.78 = 7,129.80/x
  3. Step 3: Cross multiply
    15,027.30x = 22,521.78 × 7,129.80
  4. Step 4: Simplify right side
    15,027.30x = 160,575,787.04
  5. Step 5: Solve for x
    x = 160,575,787.04/15,027.30
  6. Step 6: Final answer
    x = 10,685.60

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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.