Home / 12,425.07-17,143.20-8,643.99

Finding the Fourth Proportional to 12,425.07, 17,143.20 and 8,643.99

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Solution

The fourth proportional to 12,425.07, 17,143.20 and 8,643.99 is: 11,926.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.07 : 17,143.20 = 8,643.99 : x
  2. Step 2: Convert to fraction form
    12,425.07/17,143.20 = 8,643.99/x
  3. Step 3: Cross multiply
    12,425.07x = 17,143.20 × 8,643.99
  4. Step 4: Simplify right side
    12,425.07x = 148,185,649.37
  5. Step 5: Solve for x
    x = 148,185,649.37/12,425.07
  6. Step 6: Final answer
    x = 11,926.34

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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.