Home / 12,148.57-18,222.12-7,153.75

Finding the Fourth Proportional to 12,148.57, 18,222.12 and 7,153.75

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Solution

The fourth proportional to 12,148.57, 18,222.12 and 7,153.75 is: 10,730.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.57 : 18,222.12 = 7,153.75 : x
  2. Step 2: Convert to fraction form
    12,148.57/18,222.12 = 7,153.75/x
  3. Step 3: Cross multiply
    12,148.57x = 18,222.12 × 7,153.75
  4. Step 4: Simplify right side
    12,148.57x = 130,356,490.95
  5. Step 5: Solve for x
    x = 130,356,490.95/12,148.57
  6. Step 6: Final answer
    x = 10,730.19

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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.