Home / 10,475.85-15,713.97-8,386.16

Finding the Fourth Proportional to 10,475.85, 15,713.97 and 8,386.16

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Solution

The fourth proportional to 10,475.85, 15,713.97 and 8,386.16 is: 12,579.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,475.85 : 15,713.97 = 8,386.16 : x
  2. Step 2: Convert to fraction form
    10,475.85/15,713.97 = 8,386.16/x
  3. Step 3: Cross multiply
    10,475.85x = 15,713.97 × 8,386.16
  4. Step 4: Simplify right side
    10,475.85x = 131,779,788.09
  5. Step 5: Solve for x
    x = 131,779,788.09/10,475.85
  6. Step 6: Final answer
    x = 12,579.39

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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.