Home / 28,415.62-39,213.78-15,841.18

Finding the Fourth Proportional to 28,415.62, 39,213.78 and 15,841.18

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Solution

The fourth proportional to 28,415.62, 39,213.78 and 15,841.18 is: 21,860.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,415.62 : 39,213.78 = 15,841.18 : x
  2. Step 2: Convert to fraction form
    28,415.62/39,213.78 = 15,841.18/x
  3. Step 3: Cross multiply
    28,415.62x = 39,213.78 × 15,841.18
  4. Step 4: Simplify right side
    28,415.62x = 621,192,547.46
  5. Step 5: Solve for x
    x = 621,192,547.46/28,415.62
  6. Step 6: Final answer
    x = 21,860.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.