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Finding the Fourth Proportional to 38,598.75, 53,267.72 and 21,831.39

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Solution

The fourth proportional to 38,598.75, 53,267.72 and 21,831.39 is: 30,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,598.75 : 53,267.72 = 21,831.39 : x
  2. Step 2: Convert to fraction form
    38,598.75/53,267.72 = 21,831.39/x
  3. Step 3: Cross multiply
    38,598.75x = 53,267.72 × 21,831.39
  4. Step 4: Simplify right side
    38,598.75x = 1,162,908,260.57
  5. Step 5: Solve for x
    x = 1,162,908,260.57/38,598.75
  6. Step 6: Final answer
    x = 30,128.13

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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.