Home / 39,831.06-54,964.96-21,925.69

Finding the Fourth Proportional to 39,831.06, 54,964.96 and 21,925.69

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Solution

The fourth proportional to 39,831.06, 54,964.96 and 21,925.69 is: 30,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,831.06 : 54,964.96 = 21,925.69 : x
  2. Step 2: Convert to fraction form
    39,831.06/54,964.96 = 21,925.69/x
  3. Step 3: Cross multiply
    39,831.06x = 54,964.96 × 21,925.69
  4. Step 4: Simplify right side
    39,831.06x = 1,205,144,673.82
  5. Step 5: Solve for x
    x = 1,205,144,673.82/39,831.06
  6. Step 6: Final answer
    x = 30,256.40

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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.