Home / 15,172.72-22,710.56-8,135.20

Finding the Fourth Proportional to 15,172.72, 22,710.56 and 8,135.20

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Solution

The fourth proportional to 15,172.72, 22,710.56 and 8,135.20 is: 12,176.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.72 : 22,710.56 = 8,135.20 : x
  2. Step 2: Convert to fraction form
    15,172.72/22,710.56 = 8,135.20/x
  3. Step 3: Cross multiply
    15,172.72x = 22,710.56 × 8,135.20
  4. Step 4: Simplify right side
    15,172.72x = 184,754,947.71
  5. Step 5: Solve for x
    x = 184,754,947.71/15,172.72
  6. Step 6: Final answer
    x = 12,176.78

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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.