Home / 13,374.09-18,456.12-7,706.76

Finding the Fourth Proportional to 13,374.09, 18,456.12 and 7,706.76

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Solution

The fourth proportional to 13,374.09, 18,456.12 and 7,706.76 is: 10,635.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,374.09 : 18,456.12 = 7,706.76 : x
  2. Step 2: Convert to fraction form
    13,374.09/18,456.12 = 7,706.76/x
  3. Step 3: Cross multiply
    13,374.09x = 18,456.12 × 7,706.76
  4. Step 4: Simplify right side
    13,374.09x = 142,236,756.56
  5. Step 5: Solve for x
    x = 142,236,756.56/13,374.09
  6. Step 6: Final answer
    x = 10,635.25

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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.