Home / 30,156.20-45,197.10-21,864.68

Finding the Fourth Proportional to 30,156.20, 45,197.10 and 21,864.68

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Solution

The fourth proportional to 30,156.20, 45,197.10 and 21,864.68 is: 32,770.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.20 : 45,197.10 = 21,864.68 : x
  2. Step 2: Convert to fraction form
    30,156.20/45,197.10 = 21,864.68/x
  3. Step 3: Cross multiply
    30,156.20x = 45,197.10 × 21,864.68
  4. Step 4: Simplify right side
    30,156.20x = 988,220,128.43
  5. Step 5: Solve for x
    x = 988,220,128.43/30,156.20
  6. Step 6: Final answer
    x = 32,770.05

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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.