Home / 30,857.62-42,600.46-19,384.50

Finding the Fourth Proportional to 30,857.62, 42,600.46 and 19,384.50

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Solution

The fourth proportional to 30,857.62, 42,600.46 and 19,384.50 is: 26,761.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,857.62 : 42,600.46 = 19,384.50 : x
  2. Step 2: Convert to fraction form
    30,857.62/42,600.46 = 19,384.50/x
  3. Step 3: Cross multiply
    30,857.62x = 42,600.46 × 19,384.50
  4. Step 4: Simplify right side
    30,857.62x = 825,788,403.87
  5. Step 5: Solve for x
    x = 825,788,403.87/30,857.62
  6. Step 6: Final answer
    x = 26,761.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.