Home / 13,742.76-18,980.46-9,258.66

Finding the Fourth Proportional to 13,742.76, 18,980.46 and 9,258.66

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Solution

The fourth proportional to 13,742.76, 18,980.46 and 9,258.66 is: 12,787.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.76 : 18,980.46 = 9,258.66 : x
  2. Step 2: Convert to fraction form
    13,742.76/18,980.46 = 9,258.66/x
  3. Step 3: Cross multiply
    13,742.76x = 18,980.46 × 9,258.66
  4. Step 4: Simplify right side
    13,742.76x = 175,733,625.78
  5. Step 5: Solve for x
    x = 175,733,625.78/13,742.76
  6. Step 6: Final answer
    x = 12,787.36

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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.