Home / 12,122.48-16,725.12-7,340.90

Finding the Fourth Proportional to 12,122.48, 16,725.12 and 7,340.90

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Solution

The fourth proportional to 12,122.48, 16,725.12 and 7,340.90 is: 10,128.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.48 : 16,725.12 = 7,340.90 : x
  2. Step 2: Convert to fraction form
    12,122.48/16,725.12 = 7,340.90/x
  3. Step 3: Cross multiply
    12,122.48x = 16,725.12 × 7,340.90
  4. Step 4: Simplify right side
    12,122.48x = 122,777,363.55
  5. Step 5: Solve for x
    x = 122,777,363.55/12,122.48
  6. Step 6: Final answer
    x = 10,128.08

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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.