Home / 28,426.20-42,664.68-28,320.36

Finding the Fourth Proportional to 28,426.20, 42,664.68 and 28,320.36

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Solution

The fourth proportional to 28,426.20, 42,664.68 and 28,320.36 is: 42,505.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.20 : 42,664.68 = 28,320.36 : x
  2. Step 2: Convert to fraction form
    28,426.20/42,664.68 = 28,320.36/x
  3. Step 3: Cross multiply
    28,426.20x = 42,664.68 × 28,320.36
  4. Step 4: Simplify right side
    28,426.20x = 1,208,279,096.88
  5. Step 5: Solve for x
    x = 1,208,279,096.88/28,426.20
  6. Step 6: Final answer
    x = 42,505.83

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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.