Home / 20,656.40-31,004.94-14,739.80

Finding the Fourth Proportional to 20,656.40, 31,004.94 and 14,739.80

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Solution

The fourth proportional to 20,656.40, 31,004.94 and 14,739.80 is: 22,124.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.40 : 31,004.94 = 14,739.80 : x
  2. Step 2: Convert to fraction form
    20,656.40/31,004.94 = 14,739.80/x
  3. Step 3: Cross multiply
    20,656.40x = 31,004.94 × 14,739.80
  4. Step 4: Simplify right side
    20,656.40x = 457,006,614.61
  5. Step 5: Solve for x
    x = 457,006,614.61/20,656.40
  6. Step 6: Final answer
    x = 22,124.21

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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.