Home / 28,890.01-39,867.78-16,143.49

Finding the Fourth Proportional to 28,890.01, 39,867.78 and 16,143.49

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Solution

The fourth proportional to 28,890.01, 39,867.78 and 16,143.49 is: 22,277.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,890.01 : 39,867.78 = 16,143.49 : x
  2. Step 2: Convert to fraction form
    28,890.01/39,867.78 = 16,143.49/x
  3. Step 3: Cross multiply
    28,890.01x = 39,867.78 × 16,143.49
  4. Step 4: Simplify right side
    28,890.01x = 643,605,107.75
  5. Step 5: Solve for x
    x = 643,605,107.75/28,890.01
  6. Step 6: Final answer
    x = 22,277.77

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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.