Home / 12,126.60-18,230.40-10,522.80

Finding the Fourth Proportional to 12,126.60, 18,230.40 and 10,522.80

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Solution

The fourth proportional to 12,126.60, 18,230.40 and 10,522.80 is: 15,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.60 : 18,230.40 = 10,522.80 : x
  2. Step 2: Convert to fraction form
    12,126.60/18,230.40 = 10,522.80/x
  3. Step 3: Cross multiply
    12,126.60x = 18,230.40 × 10,522.80
  4. Step 4: Simplify right side
    12,126.60x = 191,834,853.12
  5. Step 5: Solve for x
    x = 191,834,853.12/12,126.60
  6. Step 6: Final answer
    x = 15,819.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.