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Finding the Fourth Proportional to 17,780.80, 26,692.80 and 9,011.20

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Solution

The fourth proportional to 17,780.80, 26,692.80 and 9,011.20 is: 13,527.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,780.80 : 26,692.80 = 9,011.20 : x
  2. Step 2: Convert to fraction form
    17,780.80/26,692.80 = 9,011.20/x
  3. Step 3: Cross multiply
    17,780.80x = 26,692.80 × 9,011.20
  4. Step 4: Simplify right side
    17,780.80x = 240,534,159.36
  5. Step 5: Solve for x
    x = 240,534,159.36/17,780.80
  6. Step 6: Final answer
    x = 13,527.75

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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.