Home / 28,965.79-39,970.85-16,216.82

Finding the Fourth Proportional to 28,965.79, 39,970.85 and 16,216.82

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Solution

The fourth proportional to 28,965.79, 39,970.85 and 16,216.82 is: 22,378.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.79 : 39,970.85 = 16,216.82 : x
  2. Step 2: Convert to fraction form
    28,965.79/39,970.85 = 16,216.82/x
  3. Step 3: Cross multiply
    28,965.79x = 39,970.85 × 16,216.82
  4. Step 4: Simplify right side
    28,965.79x = 648,200,079.70
  5. Step 5: Solve for x
    x = 648,200,079.70/28,965.79
  6. Step 6: Final answer
    x = 22,378.13

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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.