Home / 12,135.96-16,750.79-7,424.19

Finding the Fourth Proportional to 12,135.96, 16,750.79 and 7,424.19

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Solution

The fourth proportional to 12,135.96, 16,750.79 and 7,424.19 is: 10,247.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.96 : 16,750.79 = 7,424.19 : x
  2. Step 2: Convert to fraction form
    12,135.96/16,750.79 = 7,424.19/x
  3. Step 3: Cross multiply
    12,135.96x = 16,750.79 × 7,424.19
  4. Step 4: Simplify right side
    12,135.96x = 124,361,047.61
  5. Step 5: Solve for x
    x = 124,361,047.61/12,135.96
  6. Step 6: Final answer
    x = 10,247.32

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Half scale
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Double scale
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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.