Home / 28,205.57-42,266.76-15,708.38

Finding the Fourth Proportional to 28,205.57, 42,266.76 and 15,708.38

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Solution

The fourth proportional to 28,205.57, 42,266.76 and 15,708.38 is: 23,539.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205.57 : 42,266.76 = 15,708.38 : x
  2. Step 2: Convert to fraction form
    28,205.57/42,266.76 = 15,708.38/x
  3. Step 3: Cross multiply
    28,205.57x = 42,266.76 × 15,708.38
  4. Step 4: Simplify right side
    28,205.57x = 663,942,383.32
  5. Step 5: Solve for x
    x = 663,942,383.32/28,205.57
  6. Step 6: Final answer
    x = 23,539.41

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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.