Home / 15,372.69-21,214.39-8,658.41

Finding the Fourth Proportional to 15,372.69, 21,214.39 and 8,658.41

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Solution

The fourth proportional to 15,372.69, 21,214.39 and 8,658.41 is: 11,948.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,372.69 : 21,214.39 = 8,658.41 : x
  2. Step 2: Convert to fraction form
    15,372.69/21,214.39 = 8,658.41/x
  3. Step 3: Cross multiply
    15,372.69x = 21,214.39 × 8,658.41
  4. Step 4: Simplify right side
    15,372.69x = 183,682,894.37
  5. Step 5: Solve for x
    x = 183,682,894.37/15,372.69
  6. Step 6: Final answer
    x = 11,948.65

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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.