Home / 31,656.40-47,446.20-14,107.60

Finding the Fourth Proportional to 31,656.40, 47,446.20 and 14,107.60

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Solution

The fourth proportional to 31,656.40, 47,446.20 and 14,107.60 is: 21,144.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,656.40 : 47,446.20 = 14,107.60 : x
  2. Step 2: Convert to fraction form
    31,656.40/47,446.20 = 14,107.60/x
  3. Step 3: Cross multiply
    31,656.40x = 47,446.20 × 14,107.60
  4. Step 4: Simplify right side
    31,656.40x = 669,352,011.12
  5. Step 5: Solve for x
    x = 669,352,011.12/31,656.40
  6. Step 6: Final answer
    x = 21,144.29

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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.