Home / 28,166.40-42,249.60-10,636.80

Finding the Fourth Proportional to 28,166.40, 42,249.60 and 10,636.80

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Solution

The fourth proportional to 28,166.40, 42,249.60 and 10,636.80 is: 15,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.40 : 42,249.60 = 10,636.80 : x
  2. Step 2: Convert to fraction form
    28,166.40/42,249.60 = 10,636.80/x
  3. Step 3: Cross multiply
    28,166.40x = 42,249.60 × 10,636.80
  4. Step 4: Simplify right side
    28,166.40x = 449,400,545.28
  5. Step 5: Solve for x
    x = 449,400,545.28/28,166.40
  6. Step 6: Final answer
    x = 15,955.20

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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.