Home / 28,219.05-38,942.73-15,473.40

Finding the Fourth Proportional to 28,219.05, 38,942.73 and 15,473.40

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Solution

The fourth proportional to 28,219.05, 38,942.73 and 15,473.40 is: 21,353.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.05 : 38,942.73 = 15,473.40 : x
  2. Step 2: Convert to fraction form
    28,219.05/38,942.73 = 15,473.40/x
  3. Step 3: Cross multiply
    28,219.05x = 38,942.73 × 15,473.40
  4. Step 4: Simplify right side
    28,219.05x = 602,576,438.38
  5. Step 5: Solve for x
    x = 602,576,438.38/28,219.05
  6. Step 6: Final answer
    x = 21,353.53

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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.