Home / 27,998.08-42,011.20-18,644.48

Finding the Fourth Proportional to 27,998.08, 42,011.20 and 18,644.48

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Solution

The fourth proportional to 27,998.08, 42,011.20 and 18,644.48 is: 27,976.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,998.08 : 42,011.20 = 18,644.48 : x
  2. Step 2: Convert to fraction form
    27,998.08/42,011.20 = 18,644.48/x
  3. Step 3: Cross multiply
    27,998.08x = 42,011.20 × 18,644.48
  4. Step 4: Simplify right side
    27,998.08x = 783,276,978.18
  5. Step 5: Solve for x
    x = 783,276,978.18/27,998.08
  6. Step 6: Final answer
    x = 27,976.10

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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.