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Finding the Fourth Proportional to 30,000.80, 44,964.72 and 21,238.24

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Solution

The fourth proportional to 30,000.80, 44,964.72 and 21,238.24 is: 31,831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,000.80 : 44,964.72 = 21,238.24 : x
  2. Step 2: Convert to fraction form
    30,000.80/44,964.72 = 21,238.24/x
  3. Step 3: Cross multiply
    30,000.80x = 44,964.72 × 21,238.24
  4. Step 4: Simplify right side
    30,000.80x = 954,971,514.89
  5. Step 5: Solve for x
    x = 954,971,514.89/30,000.80
  6. Step 6: Final answer
    x = 31,831.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.