Home / 15,286.40-22,897.20-12,370.40

Finding the Fourth Proportional to 15,286.40, 22,897.20 and 12,370.40

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Solution

The fourth proportional to 15,286.40, 22,897.20 and 12,370.40 is: 18,529.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.40 : 22,897.20 = 12,370.40 : x
  2. Step 2: Convert to fraction form
    15,286.40/22,897.20 = 12,370.40/x
  3. Step 3: Cross multiply
    15,286.40x = 22,897.20 × 12,370.40
  4. Step 4: Simplify right side
    15,286.40x = 283,247,522.88
  5. Step 5: Solve for x
    x = 283,247,522.88/15,286.40
  6. Step 6: Final answer
    x = 18,529.38

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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.