Home / 19,770.20-27,282.40-10,817.77

Finding the Fourth Proportional to 19,770.20, 27,282.40 and 10,817.77

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Solution

The fourth proportional to 19,770.20, 27,282.40 and 10,817.77 is: 14,928.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.20 : 27,282.40 = 10,817.77 : x
  2. Step 2: Convert to fraction form
    19,770.20/27,282.40 = 10,817.77/x
  3. Step 3: Cross multiply
    19,770.20x = 27,282.40 × 10,817.77
  4. Step 4: Simplify right side
    19,770.20x = 295,134,728.25
  5. Step 5: Solve for x
    x = 295,134,728.25/19,770.20
  6. Step 6: Final answer
    x = 14,928.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.