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Finding the Fourth Proportional to 16,404.80, 24,601.20 and 5,314.40

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Solution

The fourth proportional to 16,404.80, 24,601.20 and 5,314.40 is: 7,969.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,404.80 : 24,601.20 = 5,314.40 : x
  2. Step 2: Convert to fraction form
    16,404.80/24,601.20 = 5,314.40/x
  3. Step 3: Cross multiply
    16,404.80x = 24,601.20 × 5,314.40
  4. Step 4: Simplify right side
    16,404.80x = 130,740,617.28
  5. Step 5: Solve for x
    x = 130,740,617.28/16,404.80
  6. Step 6: Final answer
    x = 7,969.66

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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.