Home / 20,426.64-30,580.20-15,515.52

Finding the Fourth Proportional to 20,426.64, 30,580.20 and 15,515.52

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Solution

The fourth proportional to 20,426.64, 30,580.20 and 15,515.52 is: 23,227.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.64 : 30,580.20 = 15,515.52 : x
  2. Step 2: Convert to fraction form
    20,426.64/30,580.20 = 15,515.52/x
  3. Step 3: Cross multiply
    20,426.64x = 30,580.20 × 15,515.52
  4. Step 4: Simplify right side
    20,426.64x = 474,467,704.70
  5. Step 5: Solve for x
    x = 474,467,704.70/20,426.64
  6. Step 6: Final answer
    x = 23,227.89

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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.