Home / 20,336.40-30,472.20-15,087.60

Finding the Fourth Proportional to 20,336.40, 30,472.20 and 15,087.60

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Solution

The fourth proportional to 20,336.40, 30,472.20 and 15,087.60 is: 22,607.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.40 : 30,472.20 = 15,087.60 : x
  2. Step 2: Convert to fraction form
    20,336.40/30,472.20 = 15,087.60/x
  3. Step 3: Cross multiply
    20,336.40x = 30,472.20 × 15,087.60
  4. Step 4: Simplify right side
    20,336.40x = 459,752,364.72
  5. Step 5: Solve for x
    x = 459,752,364.72/20,336.40
  6. Step 6: Final answer
    x = 22,607.36

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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.