Home / 17,220.53-25,780.61-12,797.80

Finding the Fourth Proportional to 17,220.53, 25,780.61 and 12,797.80

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Solution

The fourth proportional to 17,220.53, 25,780.61 and 12,797.80 is: 19,159.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,220.53 : 25,780.61 = 12,797.80 : x
  2. Step 2: Convert to fraction form
    17,220.53/25,780.61 = 12,797.80/x
  3. Step 3: Cross multiply
    17,220.53x = 25,780.61 × 12,797.80
  4. Step 4: Simplify right side
    17,220.53x = 329,935,058.20
  5. Step 5: Solve for x
    x = 329,935,058.20/17,220.53
  6. Step 6: Final answer
    x = 19,159.40

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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.