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Finding the Fourth Proportional to 18,817.65, 25,968.71 and 10,319.26

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Solution

The fourth proportional to 18,817.65, 25,968.71 and 10,319.26 is: 14,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.65 : 25,968.71 = 10,319.26 : x
  2. Step 2: Convert to fraction form
    18,817.65/25,968.71 = 10,319.26/x
  3. Step 3: Cross multiply
    18,817.65x = 25,968.71 × 10,319.26
  4. Step 4: Simplify right side
    18,817.65x = 267,977,870.35
  5. Step 5: Solve for x
    x = 267,977,870.35/18,817.65
  6. Step 6: Final answer
    x = 14,240.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.