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Finding the Fourth Proportional to 17,220.08, 25,830.36 and 9,815.72

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Solution

The fourth proportional to 17,220.08, 25,830.36 and 9,815.72 is: 14,723.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,220.08 : 25,830.36 = 9,815.72 : x
  2. Step 2: Convert to fraction form
    17,220.08/25,830.36 = 9,815.72/x
  3. Step 3: Cross multiply
    17,220.08x = 25,830.36 × 9,815.72
  4. Step 4: Simplify right side
    17,220.08x = 253,543,581.26
  5. Step 5: Solve for x
    x = 253,543,581.26/17,220.08
  6. Step 6: Final answer
    x = 14,723.72

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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.