Home / 10,143.74-15,211.06-4,881.28

Finding the Fourth Proportional to 10,143.74, 15,211.06 and 4,881.28

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Solution

The fourth proportional to 10,143.74, 15,211.06 and 4,881.28 is: 7,319.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.74 : 15,211.06 = 4,881.28 : x
  2. Step 2: Convert to fraction form
    10,143.74/15,211.06 = 4,881.28/x
  3. Step 3: Cross multiply
    10,143.74x = 15,211.06 × 4,881.28
  4. Step 4: Simplify right side
    10,143.74x = 74,249,442.96
  5. Step 5: Solve for x
    x = 74,249,442.96/10,143.74
  6. Step 6: Final answer
    x = 7,319.73

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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.