Home / 10,278.66-15,425.37-7,688.46

Finding the Fourth Proportional to 10,278.66, 15,425.37 and 7,688.46

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Solution

The fourth proportional to 10,278.66, 15,425.37 and 7,688.46 is: 11,538.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.66 : 15,425.37 = 7,688.46 : x
  2. Step 2: Convert to fraction form
    10,278.66/15,425.37 = 7,688.46/x
  3. Step 3: Cross multiply
    10,278.66x = 15,425.37 × 7,688.46
  4. Step 4: Simplify right side
    10,278.66x = 118,597,340.23
  5. Step 5: Solve for x
    x = 118,597,340.23/10,278.66
  6. Step 6: Final answer
    x = 11,538.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.