Home / 12,427.20-17,140.95-10,377.45

Finding the Fourth Proportional to 12,427.20, 17,140.95 and 10,377.45

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Solution

The fourth proportional to 12,427.20, 17,140.95 and 10,377.45 is: 14,313.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.20 : 17,140.95 = 10,377.45 : x
  2. Step 2: Convert to fraction form
    12,427.20/17,140.95 = 10,377.45/x
  3. Step 3: Cross multiply
    12,427.20x = 17,140.95 × 10,377.45
  4. Step 4: Simplify right side
    12,427.20x = 177,879,351.58
  5. Step 5: Solve for x
    x = 177,879,351.58/12,427.20
  6. Step 6: Final answer
    x = 14,313.71

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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.