Home / 28,784.40-39,715.56-16,209.15

Finding the Fourth Proportional to 28,784.40, 39,715.56 and 16,209.15

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Solution

The fourth proportional to 28,784.40, 39,715.56 and 16,209.15 is: 22,364.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,784.40 : 39,715.56 = 16,209.15 : x
  2. Step 2: Convert to fraction form
    28,784.40/39,715.56 = 16,209.15/x
  3. Step 3: Cross multiply
    28,784.40x = 39,715.56 × 16,209.15
  4. Step 4: Simplify right side
    28,784.40x = 643,755,469.37
  5. Step 5: Solve for x
    x = 643,755,469.37/28,784.40
  6. Step 6: Final answer
    x = 22,364.73

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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.