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Finding the Fourth Proportional to 16,807.58, 25,211.35 and 5,120.80

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Solution

The fourth proportional to 16,807.58, 25,211.35 and 5,120.80 is: 7,681.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,807.58 : 25,211.35 = 5,120.80 : x
  2. Step 2: Convert to fraction form
    16,807.58/25,211.35 = 5,120.80/x
  3. Step 3: Cross multiply
    16,807.58x = 25,211.35 × 5,120.80
  4. Step 4: Simplify right side
    16,807.58x = 129,102,224.45
  5. Step 5: Solve for x
    x = 129,102,224.45/16,807.58
  6. Step 6: Final answer
    x = 7,681.19

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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.