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Finding the Fourth Proportional to 28,875.04, 39,847.85 and 16,938.58

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Solution

The fourth proportional to 28,875.04, 39,847.85 and 16,938.58 is: 23,375.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.04 : 39,847.85 = 16,938.58 : x
  2. Step 2: Convert to fraction form
    28,875.04/39,847.85 = 16,938.58/x
  3. Step 3: Cross multiply
    28,875.04x = 39,847.85 × 16,938.58
  4. Step 4: Simplify right side
    28,875.04x = 674,965,711.12
  5. Step 5: Solve for x
    x = 674,965,711.12/28,875.04
  6. Step 6: Final answer
    x = 23,375.41

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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.