Home / 28,081.35-42,109.52-10,538.78

Finding the Fourth Proportional to 28,081.35, 42,109.52 and 10,538.78

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Solution

The fourth proportional to 28,081.35, 42,109.52 and 10,538.78 is: 15,803.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.35 : 42,109.52 = 10,538.78 : x
  2. Step 2: Convert to fraction form
    28,081.35/42,109.52 = 10,538.78/x
  3. Step 3: Cross multiply
    28,081.35x = 42,109.52 × 10,538.78
  4. Step 4: Simplify right side
    28,081.35x = 443,782,703.94
  5. Step 5: Solve for x
    x = 443,782,703.94/28,081.35
  6. Step 6: Final answer
    x = 15,803.47

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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.