Home / 28,965.61-39,969.03-16,217.79

Finding the Fourth Proportional to 28,965.61, 39,969.03 and 16,217.79

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Solution

The fourth proportional to 28,965.61, 39,969.03 and 16,217.79 is: 22,378.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.61 : 39,969.03 = 16,217.79 : x
  2. Step 2: Convert to fraction form
    28,965.61/39,969.03 = 16,217.79/x
  3. Step 3: Cross multiply
    28,965.61x = 39,969.03 × 16,217.79
  4. Step 4: Simplify right side
    28,965.61x = 648,209,253.95
  5. Step 5: Solve for x
    x = 648,209,253.95/28,965.61
  6. Step 6: Final answer
    x = 22,378.59

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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.