Home / 10,403.78-15,609.56-5,403.03

Finding the Fourth Proportional to 10,403.78, 15,609.56 and 5,403.03

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Solution

The fourth proportional to 10,403.78, 15,609.56 and 5,403.03 is: 8,106.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,403.78 : 15,609.56 = 5,403.03 : x
  2. Step 2: Convert to fraction form
    10,403.78/15,609.56 = 5,403.03/x
  3. Step 3: Cross multiply
    10,403.78x = 15,609.56 × 5,403.03
  4. Step 4: Simplify right side
    10,403.78x = 84,338,920.97
  5. Step 5: Solve for x
    x = 84,338,920.97/10,403.78
  6. Step 6: Final answer
    x = 8,106.57

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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.