Home / 20,930.64-31,376.52-14,359.92

Finding the Fourth Proportional to 20,930.64, 31,376.52 and 14,359.92

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Solution

The fourth proportional to 20,930.64, 31,376.52 and 14,359.92 is: 21,526.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.64 : 31,376.52 = 14,359.92 : x
  2. Step 2: Convert to fraction form
    20,930.64/31,376.52 = 14,359.92/x
  3. Step 3: Cross multiply
    20,930.64x = 31,376.52 × 14,359.92
  4. Step 4: Simplify right side
    20,930.64x = 450,564,317.08
  5. Step 5: Solve for x
    x = 450,564,317.08/20,930.64
  6. Step 6: Final answer
    x = 21,526.54

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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.