Home / 15,424.42-21,284.46-8,711.68

Finding the Fourth Proportional to 15,424.42, 21,284.46 and 8,711.68

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Solution

The fourth proportional to 15,424.42, 21,284.46 and 8,711.68 is: 12,021.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.42 : 21,284.46 = 8,711.68 : x
  2. Step 2: Convert to fraction form
    15,424.42/21,284.46 = 8,711.68/x
  3. Step 3: Cross multiply
    15,424.42x = 21,284.46 × 8,711.68
  4. Step 4: Simplify right side
    15,424.42x = 185,423,404.49
  5. Step 5: Solve for x
    x = 185,423,404.49/15,424.42
  6. Step 6: Final answer
    x = 12,021.42

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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.