Home / 10,289.78-15,437.10-3,625.28

Finding the Fourth Proportional to 10,289.78, 15,437.10 and 3,625.28

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Solution

The fourth proportional to 10,289.78, 15,437.10 and 3,625.28 is: 5,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,289.78 : 15,437.10 = 3,625.28 : x
  2. Step 2: Convert to fraction form
    10,289.78/15,437.10 = 3,625.28/x
  3. Step 3: Cross multiply
    10,289.78x = 15,437.10 × 3,625.28
  4. Step 4: Simplify right side
    10,289.78x = 55,963,809.89
  5. Step 5: Solve for x
    x = 55,963,809.89/10,289.78
  6. Step 6: Final answer
    x = 5,438.78

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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.