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Finding the Fourth Proportional to 30,228.70, 45,358.80 and 14,451.52

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Solution

The fourth proportional to 30,228.70, 45,358.80 and 14,451.52 is: 21,684.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,228.70 : 45,358.80 = 14,451.52 : x
  2. Step 2: Convert to fraction form
    30,228.70/45,358.80 = 14,451.52/x
  3. Step 3: Cross multiply
    30,228.70x = 45,358.80 × 14,451.52
  4. Step 4: Simplify right side
    30,228.70x = 655,503,605.38
  5. Step 5: Solve for x
    x = 655,503,605.38/30,228.70
  6. Step 6: Final answer
    x = 21,684.81

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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.