Home / 13,276.71-18,321.66-7,902.90

Finding the Fourth Proportional to 13,276.71, 18,321.66 and 7,902.90

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Solution

The fourth proportional to 13,276.71, 18,321.66 and 7,902.90 is: 10,905.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.71 : 18,321.66 = 7,902.90 : x
  2. Step 2: Convert to fraction form
    13,276.71/18,321.66 = 7,902.90/x
  3. Step 3: Cross multiply
    13,276.71x = 18,321.66 × 7,902.90
  4. Step 4: Simplify right side
    13,276.71x = 144,794,246.81
  5. Step 5: Solve for x
    x = 144,794,246.81/13,276.71
  6. Step 6: Final answer
    x = 10,905.88

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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.