Home / 28,134.73-42,142.56-18,244.63

Finding the Fourth Proportional to 28,134.73, 42,142.56 and 18,244.63

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Solution

The fourth proportional to 28,134.73, 42,142.56 and 18,244.63 is: 27,328.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.73 : 42,142.56 = 18,244.63 : x
  2. Step 2: Convert to fraction form
    28,134.73/42,142.56 = 18,244.63/x
  3. Step 3: Cross multiply
    28,134.73x = 42,142.56 × 18,244.63
  4. Step 4: Simplify right side
    28,134.73x = 768,875,414.45
  5. Step 5: Solve for x
    x = 768,875,414.45/28,134.73
  6. Step 6: Final answer
    x = 27,328.34

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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.