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Finding the Fourth Proportional to 15,078.11, 22,617.98 and 3,985.16

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Solution

The fourth proportional to 15,078.11, 22,617.98 and 3,985.16 is: 5,977.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,078.11 : 22,617.98 = 3,985.16 : x
  2. Step 2: Convert to fraction form
    15,078.11/22,617.98 = 3,985.16/x
  3. Step 3: Cross multiply
    15,078.11x = 22,617.98 × 3,985.16
  4. Step 4: Simplify right side
    15,078.11x = 90,136,269.18
  5. Step 5: Solve for x
    x = 90,136,269.18/15,078.11
  6. Step 6: Final answer
    x = 5,977.96

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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.