Home / 10,590.72-15,880.32-8,736

Finding the Fourth Proportional to 10,590.72, 15,880.32 and 8,736

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Solution

The fourth proportional to 10,590.72, 15,880.32 and 8,736 is: 13,099.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,590.72 : 15,880.32 = 8,736 : x
  2. Step 2: Convert to fraction form
    10,590.72/15,880.32 = 8,736/x
  3. Step 3: Cross multiply
    10,590.72x = 15,880.32 × 8,736
  4. Step 4: Simplify right side
    10,590.72x = 138,730,475.52
  5. Step 5: Solve for x
    x = 138,730,475.52/10,590.72
  6. Step 6: Final answer
    x = 13,099.25

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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.