Home / 42,857.62-64,286.42-19,490.74

Finding the Fourth Proportional to 42,857.62, 64,286.42 and 19,490.74

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Solution

The fourth proportional to 42,857.62, 64,286.42 and 19,490.74 is: 29,236.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,857.62 : 64,286.42 = 19,490.74 : x
  2. Step 2: Convert to fraction form
    42,857.62/64,286.42 = 19,490.74/x
  3. Step 3: Cross multiply
    42,857.62x = 64,286.42 × 19,490.74
  4. Step 4: Simplify right side
    42,857.62x = 1,252,989,897.75
  5. Step 5: Solve for x
    x = 1,252,989,897.75/42,857.62
  6. Step 6: Final answer
    x = 29,236.11

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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.