Home / 28,160.76-42,282.66-15,705.12

Finding the Fourth Proportional to 28,160.76, 42,282.66 and 15,705.12

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Solution

The fourth proportional to 28,160.76, 42,282.66 and 15,705.12 is: 23,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.76 : 42,282.66 = 15,705.12 : x
  2. Step 2: Convert to fraction form
    28,160.76/42,282.66 = 15,705.12/x
  3. Step 3: Cross multiply
    28,160.76x = 42,282.66 × 15,705.12
  4. Step 4: Simplify right side
    28,160.76x = 664,054,249.22
  5. Step 5: Solve for x
    x = 664,054,249.22/28,160.76
  6. Step 6: Final answer
    x = 23,580.84

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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.