Home / 20,432.91-30,606.83-13,000.55

Finding the Fourth Proportional to 20,432.91, 30,606.83 and 13,000.55

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Solution

The fourth proportional to 20,432.91, 30,606.83 and 13,000.55 is: 19,473.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,432.91 : 30,606.83 = 13,000.55 : x
  2. Step 2: Convert to fraction form
    20,432.91/30,606.83 = 13,000.55/x
  3. Step 3: Cross multiply
    20,432.91x = 30,606.83 × 13,000.55
  4. Step 4: Simplify right side
    20,432.91x = 397,905,579.74
  5. Step 5: Solve for x
    x = 397,905,579.74/20,432.91
  6. Step 6: Final answer
    x = 19,473.76

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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.