Home / 12,402.60-17,106.21-8,623.87

Finding the Fourth Proportional to 12,402.60, 17,106.21 and 8,623.87

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Solution

The fourth proportional to 12,402.60, 17,106.21 and 8,623.87 is: 11,894.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.60 : 17,106.21 = 8,623.87 : x
  2. Step 2: Convert to fraction form
    12,402.60/17,106.21 = 8,623.87/x
  3. Step 3: Cross multiply
    12,402.60x = 17,106.21 × 8,623.87
  4. Step 4: Simplify right side
    12,402.60x = 147,521,731.23
  5. Step 5: Solve for x
    x = 147,521,731.23/12,402.60
  6. Step 6: Final answer
    x = 11,894.42

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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.