Home / 13,254.76-18,290.38-7,876.79

Finding the Fourth Proportional to 13,254.76, 18,290.38 and 7,876.79

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Solution

The fourth proportional to 13,254.76, 18,290.38 and 7,876.79 is: 10,869.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,254.76 : 18,290.38 = 7,876.79 : x
  2. Step 2: Convert to fraction form
    13,254.76/18,290.38 = 7,876.79/x
  3. Step 3: Cross multiply
    13,254.76x = 18,290.38 × 7,876.79
  4. Step 4: Simplify right side
    13,254.76x = 144,069,351.44
  5. Step 5: Solve for x
    x = 144,069,351.44/13,254.76
  6. Step 6: Final answer
    x = 10,869.26

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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.