Home / 19,770.40-27,282.90-10,817.80

Finding the Fourth Proportional to 19,770.40, 27,282.90 and 10,817.80

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Solution

The fourth proportional to 19,770.40, 27,282.90 and 10,817.80 is: 14,928.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,770.40 : 27,282.90 = 10,817.80 : x
  2. Step 2: Convert to fraction form
    19,770.40/27,282.90 = 10,817.80/x
  3. Step 3: Cross multiply
    19,770.40x = 27,282.90 × 10,817.80
  4. Step 4: Simplify right side
    19,770.40x = 295,140,955.62
  5. Step 5: Solve for x
    x = 295,140,955.62/19,770.40
  6. Step 6: Final answer
    x = 14,928.43

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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.