Home / 28,890.99-39,854.79-18,836.28

Finding the Fourth Proportional to 28,890.99, 39,854.79 and 18,836.28

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Solution

The fourth proportional to 28,890.99, 39,854.79 and 18,836.28 is: 25,984.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.99 : 39,854.79 = 18,836.28 : x
  2. Step 2: Convert to fraction form
    28,890.99/39,854.79 = 18,836.28/x
  3. Step 3: Cross multiply
    28,890.99x = 39,854.79 × 18,836.28
  4. Step 4: Simplify right side
    28,890.99x = 750,715,983.78
  5. Step 5: Solve for x
    x = 750,715,983.78/28,890.99
  6. Step 6: Final answer
    x = 25,984.43

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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.