Home / 25,281.10-34,890.51-15,212.80

Finding the Fourth Proportional to 25,281.10, 34,890.51 and 15,212.80

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Solution

The fourth proportional to 25,281.10, 34,890.51 and 15,212.80 is: 20,995.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,281.10 : 34,890.51 = 15,212.80 : x
  2. Step 2: Convert to fraction form
    25,281.10/34,890.51 = 15,212.80/x
  3. Step 3: Cross multiply
    25,281.10x = 34,890.51 × 15,212.80
  4. Step 4: Simplify right side
    25,281.10x = 530,782,350.53
  5. Step 5: Solve for x
    x = 530,782,350.53/25,281.10
  6. Step 6: Final answer
    x = 20,995.22

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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.