Home / 28,019.60-42,029.40-27,825.20

Finding the Fourth Proportional to 28,019.60, 42,029.40 and 27,825.20

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Solution

The fourth proportional to 28,019.60, 42,029.40 and 27,825.20 is: 41,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.60 : 42,029.40 = 27,825.20 : x
  2. Step 2: Convert to fraction form
    28,019.60/42,029.40 = 27,825.20/x
  3. Step 3: Cross multiply
    28,019.60x = 42,029.40 × 27,825.20
  4. Step 4: Simplify right side
    28,019.60x = 1,169,476,460.88
  5. Step 5: Solve for x
    x = 1,169,476,460.88/28,019.60
  6. Step 6: Final answer
    x = 41,737.80

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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.