Home / 28,960.47-39,969.18-16,218.50

Finding the Fourth Proportional to 28,960.47, 39,969.18 and 16,218.50

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Solution

The fourth proportional to 28,960.47, 39,969.18 and 16,218.50 is: 22,383.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,960.47 : 39,969.18 = 16,218.50 : x
  2. Step 2: Convert to fraction form
    28,960.47/39,969.18 = 16,218.50/x
  3. Step 3: Cross multiply
    28,960.47x = 39,969.18 × 16,218.50
  4. Step 4: Simplify right side
    28,960.47x = 648,239,945.98
  5. Step 5: Solve for x
    x = 648,239,945.98/28,960.47
  6. Step 6: Final answer
    x = 22,383.61

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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.