Home / 39,798.78-54,923.76-21,895.17

Finding the Fourth Proportional to 39,798.78, 54,923.76 and 21,895.17

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Solution

The fourth proportional to 39,798.78, 54,923.76 and 21,895.17 is: 30,216.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,798.78 : 54,923.76 = 21,895.17 : x
  2. Step 2: Convert to fraction form
    39,798.78/54,923.76 = 21,895.17/x
  3. Step 3: Cross multiply
    39,798.78x = 54,923.76 × 21,895.17
  4. Step 4: Simplify right side
    39,798.78x = 1,202,565,062.24
  5. Step 5: Solve for x
    x = 1,202,565,062.24/39,798.78
  6. Step 6: Final answer
    x = 30,216.13

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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.