Home / 10,123.78-15,185.80-3,550.16

Finding the Fourth Proportional to 10,123.78, 15,185.80 and 3,550.16

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Solution

The fourth proportional to 10,123.78, 15,185.80 and 3,550.16 is: 5,325.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,123.78 : 15,185.80 = 3,550.16 : x
  2. Step 2: Convert to fraction form
    10,123.78/15,185.80 = 3,550.16/x
  3. Step 3: Cross multiply
    10,123.78x = 15,185.80 × 3,550.16
  4. Step 4: Simplify right side
    10,123.78x = 53,911,948.24
  5. Step 5: Solve for x
    x = 53,911,948.24/10,123.78
  6. Step 6: Final answer
    x = 5,325.28

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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.