Home / 39,857.64-55,003.32-21,952.16

Finding the Fourth Proportional to 39,857.64, 55,003.32 and 21,952.16

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Solution

The fourth proportional to 39,857.64, 55,003.32 and 21,952.16 is: 30,293.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857.64 : 55,003.32 = 21,952.16 : x
  2. Step 2: Convert to fraction form
    39,857.64/55,003.32 = 21,952.16/x
  3. Step 3: Cross multiply
    39,857.64x = 55,003.32 × 21,952.16
  4. Step 4: Simplify right side
    39,857.64x = 1,207,441,681.17
  5. Step 5: Solve for x
    x = 1,207,441,681.17/39,857.64
  6. Step 6: Final answer
    x = 30,293.86

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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.