Home / 28,645.79-42,960.38-12,005.35

Finding the Fourth Proportional to 28,645.79, 42,960.38 and 12,005.35

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Solution

The fourth proportional to 28,645.79, 42,960.38 and 12,005.35 is: 18,004.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.79 : 42,960.38 = 12,005.35 : x
  2. Step 2: Convert to fraction form
    28,645.79/42,960.38 = 12,005.35/x
  3. Step 3: Cross multiply
    28,645.79x = 42,960.38 × 12,005.35
  4. Step 4: Simplify right side
    28,645.79x = 515,754,230.61
  5. Step 5: Solve for x
    x = 515,754,230.61/28,645.79
  6. Step 6: Final answer
    x = 18,004.54

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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.