Home / 12,421.66-17,137.70-7,043.52

Finding the Fourth Proportional to 12,421.66, 17,137.70 and 7,043.52

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Solution

The fourth proportional to 12,421.66, 17,137.70 and 7,043.52 is: 9,717.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,421.66 : 17,137.70 = 7,043.52 : x
  2. Step 2: Convert to fraction form
    12,421.66/17,137.70 = 7,043.52/x
  3. Step 3: Cross multiply
    12,421.66x = 17,137.70 × 7,043.52
  4. Step 4: Simplify right side
    12,421.66x = 120,709,732.70
  5. Step 5: Solve for x
    x = 120,709,732.70/12,421.66
  6. Step 6: Final answer
    x = 9,717.68

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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.