Home / 28,289.16-42,439.20-10,757.63

Finding the Fourth Proportional to 28,289.16, 42,439.20 and 10,757.63

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Solution

The fourth proportional to 28,289.16, 42,439.20 and 10,757.63 is: 16,138.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.16 : 42,439.20 = 10,757.63 : x
  2. Step 2: Convert to fraction form
    28,289.16/42,439.20 = 10,757.63/x
  3. Step 3: Cross multiply
    28,289.16x = 42,439.20 × 10,757.63
  4. Step 4: Simplify right side
    28,289.16x = 456,544,998.90
  5. Step 5: Solve for x
    x = 456,544,998.90/28,289.16
  6. Step 6: Final answer
    x = 16,138.51

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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.