Home / 20,735.47-31,098.33-14,159.89

Finding the Fourth Proportional to 20,735.47, 31,098.33 and 14,159.89

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Solution

The fourth proportional to 20,735.47, 31,098.33 and 14,159.89 is: 21,236.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.47 : 31,098.33 = 14,159.89 : x
  2. Step 2: Convert to fraction form
    20,735.47/31,098.33 = 14,159.89/x
  3. Step 3: Cross multiply
    20,735.47x = 31,098.33 × 14,159.89
  4. Step 4: Simplify right side
    20,735.47x = 440,348,931.98
  5. Step 5: Solve for x
    x = 440,348,931.98/20,735.47
  6. Step 6: Final answer
    x = 21,236.51

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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.