Home / 28,295.87-42,379.18-13,515.24

Finding the Fourth Proportional to 28,295.87, 42,379.18 and 13,515.24

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Solution

The fourth proportional to 28,295.87, 42,379.18 and 13,515.24 is: 20,241.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,295.87 : 42,379.18 = 13,515.24 : x
  2. Step 2: Convert to fraction form
    28,295.87/42,379.18 = 13,515.24/x
  3. Step 3: Cross multiply
    28,295.87x = 42,379.18 × 13,515.24
  4. Step 4: Simplify right side
    28,295.87x = 572,764,788.70
  5. Step 5: Solve for x
    x = 572,764,788.70/28,295.87
  6. Step 6: Final answer
    x = 20,241.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.