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Finding the Fourth Proportional to 35,393.52, 48,831.48 and 20,287.92

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Solution

The fourth proportional to 35,393.52, 48,831.48 and 20,287.92 is: 27,990.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,393.52 : 48,831.48 = 20,287.92 : x
  2. Step 2: Convert to fraction form
    35,393.52/48,831.48 = 20,287.92/x
  3. Step 3: Cross multiply
    35,393.52x = 48,831.48 × 20,287.92
  4. Step 4: Simplify right side
    35,393.52x = 990,689,159.72
  5. Step 5: Solve for x
    x = 990,689,159.72/35,393.52
  6. Step 6: Final answer
    x = 27,990.69

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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.