Home / 54,990.72-82,486.08-19,918.80

Finding the Fourth Proportional to 54,990.72, 82,486.08 and 19,918.80

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Solution

The fourth proportional to 54,990.72, 82,486.08 and 19,918.80 is: 29,878.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,990.72 : 82,486.08 = 19,918.80 : x
  2. Step 2: Convert to fraction form
    54,990.72/82,486.08 = 19,918.80/x
  3. Step 3: Cross multiply
    54,990.72x = 82,486.08 × 19,918.80
  4. Step 4: Simplify right side
    54,990.72x = 1,643,023,730.30
  5. Step 5: Solve for x
    x = 1,643,023,730.30/54,990.72
  6. Step 6: Final answer
    x = 29,878.20

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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.