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Finding the Fourth Proportional to 30,660.88, 45,996.12 and 9,886.48

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Solution

The fourth proportional to 30,660.88, 45,996.12 and 9,886.48 is: 14,831.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660.88 : 45,996.12 = 9,886.48 : x
  2. Step 2: Convert to fraction form
    30,660.88/45,996.12 = 9,886.48/x
  3. Step 3: Cross multiply
    30,660.88x = 45,996.12 × 9,886.48
  4. Step 4: Simplify right side
    30,660.88x = 454,739,720.46
  5. Step 5: Solve for x
    x = 454,739,720.46/30,660.88
  6. Step 6: Final answer
    x = 14,831.27

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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.