Home / 39,897.66-55,057.86-21,992.16

Finding the Fourth Proportional to 39,897.66, 55,057.86 and 21,992.16

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Solution

The fourth proportional to 39,897.66, 55,057.86 and 21,992.16 is: 30,348.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,897.66 : 55,057.86 = 21,992.16 : x
  2. Step 2: Convert to fraction form
    39,897.66/55,057.86 = 21,992.16/x
  3. Step 3: Cross multiply
    39,897.66x = 55,057.86 × 21,992.16
  4. Step 4: Simplify right side
    39,897.66x = 1,210,841,266.38
  5. Step 5: Solve for x
    x = 1,210,841,266.38/39,897.66
  6. Step 6: Final answer
    x = 30,348.68

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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.