Home / 28,220.70-42,341.85-12,627.12

Finding the Fourth Proportional to 28,220.70, 42,341.85 and 12,627.12

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Solution

The fourth proportional to 28,220.70, 42,341.85 and 12,627.12 is: 18,945.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.70 : 42,341.85 = 12,627.12 : x
  2. Step 2: Convert to fraction form
    28,220.70/42,341.85 = 12,627.12/x
  3. Step 3: Cross multiply
    28,220.70x = 42,341.85 × 12,627.12
  4. Step 4: Simplify right side
    28,220.70x = 534,655,620.97
  5. Step 5: Solve for x
    x = 534,655,620.97/28,220.70
  6. Step 6: Final answer
    x = 18,945.51

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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.