Home / 12,417.84-17,137.92-7,111.68

Finding the Fourth Proportional to 12,417.84, 17,137.92 and 7,111.68

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Solution

The fourth proportional to 12,417.84, 17,137.92 and 7,111.68 is: 9,814.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,417.84 : 17,137.92 = 7,111.68 : x
  2. Step 2: Convert to fraction form
    12,417.84/17,137.92 = 7,111.68/x
  3. Step 3: Cross multiply
    12,417.84x = 17,137.92 × 7,111.68
  4. Step 4: Simplify right side
    12,417.84x = 121,879,402.91
  5. Step 5: Solve for x
    x = 121,879,402.91/12,417.84
  6. Step 6: Final answer
    x = 9,814.86

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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.