Home / 28,898.48-39,885.24-18,280.88

Finding the Fourth Proportional to 28,898.48, 39,885.24 and 18,280.88

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Solution

The fourth proportional to 28,898.48, 39,885.24 and 18,280.88 is: 25,230.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,898.48 : 39,885.24 = 18,280.88 : x
  2. Step 2: Convert to fraction form
    28,898.48/39,885.24 = 18,280.88/x
  3. Step 3: Cross multiply
    28,898.48x = 39,885.24 × 18,280.88
  4. Step 4: Simplify right side
    28,898.48x = 729,137,286.21
  5. Step 5: Solve for x
    x = 729,137,286.21/28,898.48
  6. Step 6: Final answer
    x = 25,230.99

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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.