Home / 10,105.79-15,160.74-4,262.39

Finding the Fourth Proportional to 10,105.79, 15,160.74 and 4,262.39

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Solution

The fourth proportional to 10,105.79, 15,160.74 and 4,262.39 is: 6,394.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,105.79 : 15,160.74 = 4,262.39 : x
  2. Step 2: Convert to fraction form
    10,105.79/15,160.74 = 4,262.39/x
  3. Step 3: Cross multiply
    10,105.79x = 15,160.74 × 4,262.39
  4. Step 4: Simplify right side
    10,105.79x = 64,620,986.57
  5. Step 5: Solve for x
    x = 64,620,986.57/10,105.79
  6. Step 6: Final answer
    x = 6,394.45

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1.5x scale

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.