Home / 12,422.07-17,143.16-7,117.77

Finding the Fourth Proportional to 12,422.07, 17,143.16 and 7,117.77

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Solution

The fourth proportional to 12,422.07, 17,143.16 and 7,117.77 is: 9,822.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.07 : 17,143.16 = 7,117.77 : x
  2. Step 2: Convert to fraction form
    12,422.07/17,143.16 = 7,117.77/x
  3. Step 3: Cross multiply
    12,422.07x = 17,143.16 × 7,117.77
  4. Step 4: Simplify right side
    12,422.07x = 122,021,034.36
  5. Step 5: Solve for x
    x = 122,021,034.36/12,422.07
  6. Step 6: Final answer
    x = 9,822.92

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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.