Home / 28,519.71-39,338.66-18,294.56

Finding the Fourth Proportional to 28,519.71, 39,338.66 and 18,294.56

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Solution

The fourth proportional to 28,519.71, 39,338.66 and 18,294.56 is: 25,234.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.71 : 39,338.66 = 18,294.56 : x
  2. Step 2: Convert to fraction form
    28,519.71/39,338.66 = 18,294.56/x
  3. Step 3: Cross multiply
    28,519.71x = 39,338.66 × 18,294.56
  4. Step 4: Simplify right side
    28,519.71x = 719,683,475.69
  5. Step 5: Solve for x
    x = 719,683,475.69/28,519.71
  6. Step 6: Final answer
    x = 25,234.60

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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.