Home / 39,864.46-55,015.48-21,959.48

Finding the Fourth Proportional to 39,864.46, 55,015.48 and 21,959.48

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Solution

The fourth proportional to 39,864.46, 55,015.48 and 21,959.48 is: 30,305.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,864.46 : 55,015.48 = 21,959.48 : x
  2. Step 2: Convert to fraction form
    39,864.46/55,015.48 = 21,959.48/x
  3. Step 3: Cross multiply
    39,864.46x = 55,015.48 × 21,959.48
  4. Step 4: Simplify right side
    39,864.46x = 1,208,111,332.75
  5. Step 5: Solve for x
    x = 1,208,111,332.75/39,864.46
  6. Step 6: Final answer
    x = 30,305.47

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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.