Home / 13,074.32-18,042.60-7,769.36

Finding the Fourth Proportional to 13,074.32, 18,042.60 and 7,769.36

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Solution

The fourth proportional to 13,074.32, 18,042.60 and 7,769.36 is: 10,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.32 : 18,042.60 = 7,769.36 : x
  2. Step 2: Convert to fraction form
    13,074.32/18,042.60 = 7,769.36/x
  3. Step 3: Cross multiply
    13,074.32x = 18,042.60 × 7,769.36
  4. Step 4: Simplify right side
    13,074.32x = 140,179,454.74
  5. Step 5: Solve for x
    x = 140,179,454.74/13,074.32
  6. Step 6: Final answer
    x = 10,721.74

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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.