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Finding the Fourth Proportional to 28,649.70, 39,530.03 and 16,705.95

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Solution

The fourth proportional to 28,649.70, 39,530.03 and 16,705.95 is: 23,050.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,649.70 : 39,530.03 = 16,705.95 : x
  2. Step 2: Convert to fraction form
    28,649.70/39,530.03 = 16,705.95/x
  3. Step 3: Cross multiply
    28,649.70x = 39,530.03 × 16,705.95
  4. Step 4: Simplify right side
    28,649.70x = 660,386,472.91
  5. Step 5: Solve for x
    x = 660,386,472.91/28,649.70
  6. Step 6: Final answer
    x = 23,050.38

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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.