Home / 28,365.12-42,553.98-8,645.18

Finding the Fourth Proportional to 28,365.12, 42,553.98 and 8,645.18

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Solution

The fourth proportional to 28,365.12, 42,553.98 and 8,645.18 is: 12,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,365.12 : 42,553.98 = 8,645.18 : x
  2. Step 2: Convert to fraction form
    28,365.12/42,553.98 = 8,645.18/x
  3. Step 3: Cross multiply
    28,365.12x = 42,553.98 × 8,645.18
  4. Step 4: Simplify right side
    28,365.12x = 367,886,604.05
  5. Step 5: Solve for x
    x = 367,886,604.05/28,365.12
  6. Step 6: Final answer
    x = 12,969.68

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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.