Home / 20,905.43-31,366.93-13,014.55

Finding the Fourth Proportional to 20,905.43, 31,366.93 and 13,014.55

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Solution

The fourth proportional to 20,905.43, 31,366.93 and 13,014.55 is: 19,527.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,905.43 : 31,366.93 = 13,014.55 : x
  2. Step 2: Convert to fraction form
    20,905.43/31,366.93 = 13,014.55/x
  3. Step 3: Cross multiply
    20,905.43x = 31,366.93 × 13,014.55
  4. Step 4: Simplify right side
    20,905.43x = 408,226,421.69
  5. Step 5: Solve for x
    x = 408,226,421.69/20,905.43
  6. Step 6: Final answer
    x = 19,527.29

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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.