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Finding the Fourth Proportional to 17,220.60, 25,806.30 and 9,809.40

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Solution

The fourth proportional to 17,220.60, 25,806.30 and 9,809.40 is: 14,700.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,220.60 : 25,806.30 = 9,809.40 : x
  2. Step 2: Convert to fraction form
    17,220.60/25,806.30 = 9,809.40/x
  3. Step 3: Cross multiply
    17,220.60x = 25,806.30 × 9,809.40
  4. Step 4: Simplify right side
    17,220.60x = 253,144,319.22
  5. Step 5: Solve for x
    x = 253,144,319.22/17,220.60
  6. Step 6: Final answer
    x = 14,700.09

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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.