Home / 19,243.20-28,864.80-13,338.30

Finding the Fourth Proportional to 19,243.20, 28,864.80 and 13,338.30

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Solution

The fourth proportional to 19,243.20, 28,864.80 and 13,338.30 is: 20,007.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.20 : 28,864.80 = 13,338.30 : x
  2. Step 2: Convert to fraction form
    19,243.20/28,864.80 = 13,338.30/x
  3. Step 3: Cross multiply
    19,243.20x = 28,864.80 × 13,338.30
  4. Step 4: Simplify right side
    19,243.20x = 385,007,361.84
  5. Step 5: Solve for x
    x = 385,007,361.84/19,243.20
  6. Step 6: Final answer
    x = 20,007.45

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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.