Home / 28,036.78-42,048.68-8,310.58

Finding the Fourth Proportional to 28,036.78, 42,048.68 and 8,310.58

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Solution

The fourth proportional to 28,036.78, 42,048.68 and 8,310.58 is: 12,463.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.78 : 42,048.68 = 8,310.58 : x
  2. Step 2: Convert to fraction form
    28,036.78/42,048.68 = 8,310.58/x
  3. Step 3: Cross multiply
    28,036.78x = 42,048.68 × 8,310.58
  4. Step 4: Simplify right side
    28,036.78x = 349,448,834.69
  5. Step 5: Solve for x
    x = 349,448,834.69/28,036.78
  6. Step 6: Final answer
    x = 12,463.94

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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.