Home / 39,736.16-54,836.91-21,831.62

Finding the Fourth Proportional to 39,736.16, 54,836.91 and 21,831.62

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Solution

The fourth proportional to 39,736.16, 54,836.91 and 21,831.62 is: 30,128.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,736.16 : 54,836.91 = 21,831.62 : x
  2. Step 2: Convert to fraction form
    39,736.16/54,836.91 = 21,831.62/x
  3. Step 3: Cross multiply
    39,736.16x = 54,836.91 × 21,831.62
  4. Step 4: Simplify right side
    39,736.16x = 1,197,178,718.19
  5. Step 5: Solve for x
    x = 1,197,178,718.19/39,736.16
  6. Step 6: Final answer
    x = 30,128.20

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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.