Home / 28,292.45-42,398.44-20,838.29

Finding the Fourth Proportional to 28,292.45, 42,398.44 and 20,838.29

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Solution

The fourth proportional to 28,292.45, 42,398.44 and 20,838.29 is: 31,227.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,292.45 : 42,398.44 = 20,838.29 : x
  2. Step 2: Convert to fraction form
    28,292.45/42,398.44 = 20,838.29/x
  3. Step 3: Cross multiply
    28,292.45x = 42,398.44 × 20,838.29
  4. Step 4: Simplify right side
    28,292.45x = 883,510,724.18
  5. Step 5: Solve for x
    x = 883,510,724.18/28,292.45
  6. Step 6: Final answer
    x = 31,227.80

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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.