Home / 28,516.71-39,334.52-18,291.56

Finding the Fourth Proportional to 28,516.71, 39,334.52 and 18,291.56

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Solution

The fourth proportional to 28,516.71, 39,334.52 and 18,291.56 is: 25,230.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.71 : 39,334.52 = 18,291.56 : x
  2. Step 2: Convert to fraction form
    28,516.71/39,334.52 = 18,291.56/x
  3. Step 3: Cross multiply
    28,516.71x = 39,334.52 × 18,291.56
  4. Step 4: Simplify right side
    28,516.71x = 719,489,732.65
  5. Step 5: Solve for x
    x = 719,489,732.65/28,516.71
  6. Step 6: Final answer
    x = 25,230.46

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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.