Home / 28,830.60-43,221.90-12,203.40

Finding the Fourth Proportional to 28,830.60, 43,221.90 and 12,203.40

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Solution

The fourth proportional to 28,830.60, 43,221.90 and 12,203.40 is: 18,294.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,830.60 : 43,221.90 = 12,203.40 : x
  2. Step 2: Convert to fraction form
    28,830.60/43,221.90 = 12,203.40/x
  3. Step 3: Cross multiply
    28,830.60x = 43,221.90 × 12,203.40
  4. Step 4: Simplify right side
    28,830.60x = 527,454,134.46
  5. Step 5: Solve for x
    x = 527,454,134.46/28,830.60
  6. Step 6: Final answer
    x = 18,294.94

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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.