Home / 12,417.03-17,137.94-7,115.40

Finding the Fourth Proportional to 12,417.03, 17,137.94 and 7,115.40

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Solution

The fourth proportional to 12,417.03, 17,137.94 and 7,115.40 is: 9,820.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,417.03 : 17,137.94 = 7,115.40 : x
  2. Step 2: Convert to fraction form
    12,417.03/17,137.94 = 7,115.40/x
  3. Step 3: Cross multiply
    12,417.03x = 17,137.94 × 7,115.40
  4. Step 4: Simplify right side
    12,417.03x = 121,943,262.70
  5. Step 5: Solve for x
    x = 121,943,262.70/12,417.03
  6. Step 6: Final answer
    x = 9,820.65

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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.