Home / 55,654.12-83,513.94-20,618.20

Finding the Fourth Proportional to 55,654.12, 83,513.94 and 20,618.20

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Solution

The fourth proportional to 55,654.12, 83,513.94 and 20,618.20 is: 30,939.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,654.12 : 83,513.94 = 20,618.20 : x
  2. Step 2: Convert to fraction form
    55,654.12/83,513.94 = 20,618.20/x
  3. Step 3: Cross multiply
    55,654.12x = 83,513.94 × 20,618.20
  4. Step 4: Simplify right side
    55,654.12x = 1,721,907,117.71
  5. Step 5: Solve for x
    x = 1,721,907,117.71/55,654.12
  6. Step 6: Final answer
    x = 30,939.44

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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.