Home / 28,105.40-42,071.70-16,383.80

Finding the Fourth Proportional to 28,105.40, 42,071.70 and 16,383.80

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Solution

The fourth proportional to 28,105.40, 42,071.70 and 16,383.80 is: 24,525.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,105.40 : 42,071.70 = 16,383.80 : x
  2. Step 2: Convert to fraction form
    28,105.40/42,071.70 = 16,383.80/x
  3. Step 3: Cross multiply
    28,105.40x = 42,071.70 × 16,383.80
  4. Step 4: Simplify right side
    28,105.40x = 689,294,318.46
  5. Step 5: Solve for x
    x = 689,294,318.46/28,105.40
  6. Step 6: Final answer
    x = 24,525.33

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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.