Home / 28,861.68-43,236.39-18,970.89

Finding the Fourth Proportional to 28,861.68, 43,236.39 and 18,970.89

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Solution

The fourth proportional to 28,861.68, 43,236.39 and 18,970.89 is: 28,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.68 : 43,236.39 = 18,970.89 : x
  2. Step 2: Convert to fraction form
    28,861.68/43,236.39 = 18,970.89/x
  3. Step 3: Cross multiply
    28,861.68x = 43,236.39 × 18,970.89
  4. Step 4: Simplify right side
    28,861.68x = 820,232,798.69
  5. Step 5: Solve for x
    x = 820,232,798.69/28,861.68
  6. Step 6: Final answer
    x = 28,419.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.