Home / 10,355.69-15,531.90-3,430.19

Finding the Fourth Proportional to 10,355.69, 15,531.90 and 3,430.19

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Solution

The fourth proportional to 10,355.69, 15,531.90 and 3,430.19 is: 5,144.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,355.69 : 15,531.90 = 3,430.19 : x
  2. Step 2: Convert to fraction form
    10,355.69/15,531.90 = 3,430.19/x
  3. Step 3: Cross multiply
    10,355.69x = 15,531.90 × 3,430.19
  4. Step 4: Simplify right side
    10,355.69x = 53,277,290.40
  5. Step 5: Solve for x
    x = 53,277,290.40/10,355.69
  6. Step 6: Final answer
    x = 5,144.74

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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.