Home / 10,902.06-15,042.81-6,427.20

Finding the Fourth Proportional to 10,902.06, 15,042.81 and 6,427.20

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Solution

The fourth proportional to 10,902.06, 15,042.81 and 6,427.20 is: 8,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,902.06 : 15,042.81 = 6,427.20 : x
  2. Step 2: Convert to fraction form
    10,902.06/15,042.81 = 6,427.20/x
  3. Step 3: Cross multiply
    10,902.06x = 15,042.81 × 6,427.20
  4. Step 4: Simplify right side
    10,902.06x = 96,683,148.43
  5. Step 5: Solve for x
    x = 96,683,148.43/10,902.06
  6. Step 6: Final answer
    x = 8,868.34

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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.