Home / 8,680.14-11,969.63-7,425.35

Finding the Fourth Proportional to 8,680.14, 11,969.63 and 7,425.35

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Solution

The fourth proportional to 8,680.14, 11,969.63 and 7,425.35 is: 10,239.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.14 : 11,969.63 = 7,425.35 : x
  2. Step 2: Convert to fraction form
    8,680.14/11,969.63 = 7,425.35/x
  3. Step 3: Cross multiply
    8,680.14x = 11,969.63 × 7,425.35
  4. Step 4: Simplify right side
    8,680.14x = 88,878,595.15
  5. Step 5: Solve for x
    x = 88,878,595.15/8,680.14
  6. Step 6: Final answer
    x = 10,239.31

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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.