Home / 28,201.60-42,299.20-7,426.72

Finding the Fourth Proportional to 28,201.60, 42,299.20 and 7,426.72

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Solution

The fourth proportional to 28,201.60, 42,299.20 and 7,426.72 is: 11,139.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.60 : 42,299.20 = 7,426.72 : x
  2. Step 2: Convert to fraction form
    28,201.60/42,299.20 = 7,426.72/x
  3. Step 3: Cross multiply
    28,201.60x = 42,299.20 × 7,426.72
  4. Step 4: Simplify right side
    28,201.60x = 314,144,314.62
  5. Step 5: Solve for x
    x = 314,144,314.62/28,201.60
  6. Step 6: Final answer
    x = 11,139.24

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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.