Home / 28,108.62-42,169.01-10,578.40

Finding the Fourth Proportional to 28,108.62, 42,169.01 and 10,578.40

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Solution

The fourth proportional to 28,108.62, 42,169.01 and 10,578.40 is: 15,869.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,108.62 : 42,169.01 = 10,578.40 : x
  2. Step 2: Convert to fraction form
    28,108.62/42,169.01 = 10,578.40/x
  3. Step 3: Cross multiply
    28,108.62x = 42,169.01 × 10,578.40
  4. Step 4: Simplify right side
    28,108.62x = 446,080,497.07
  5. Step 5: Solve for x
    x = 446,080,497.07/28,108.62
  6. Step 6: Final answer
    x = 15,869.88

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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.