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Finding the Fourth Proportional to 10,618.63, 15,929.86 and 4,375.16

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Solution

The fourth proportional to 10,618.63, 15,929.86 and 4,375.16 is: 6,563.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,618.63 : 15,929.86 = 4,375.16 : x
  2. Step 2: Convert to fraction form
    10,618.63/15,929.86 = 4,375.16/x
  3. Step 3: Cross multiply
    10,618.63x = 15,929.86 × 4,375.16
  4. Step 4: Simplify right side
    10,618.63x = 69,695,750.16
  5. Step 5: Solve for x
    x = 69,695,750.16/10,618.63
  6. Step 6: Final answer
    x = 6,563.54

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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.