Home / 28,491.75-39,318.62-15,916.50

Finding the Fourth Proportional to 28,491.75, 39,318.62 and 15,916.50

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Solution

The fourth proportional to 28,491.75, 39,318.62 and 15,916.50 is: 21,964.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,491.75 : 39,318.62 = 15,916.50 : x
  2. Step 2: Convert to fraction form
    28,491.75/39,318.62 = 15,916.50/x
  3. Step 3: Cross multiply
    28,491.75x = 39,318.62 × 15,916.50
  4. Step 4: Simplify right side
    28,491.75x = 625,814,735.65
  5. Step 5: Solve for x
    x = 625,814,735.65/28,491.75
  6. Step 6: Final answer
    x = 21,964.77

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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.