Home / 21,193.76-31,789.32-9,503.12

Finding the Fourth Proportional to 21,193.76, 31,789.32 and 9,503.12

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Solution

The fourth proportional to 21,193.76, 31,789.32 and 9,503.12 is: 14,254.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.76 : 31,789.32 = 9,503.12 : x
  2. Step 2: Convert to fraction form
    21,193.76/31,789.32 = 9,503.12/x
  3. Step 3: Cross multiply
    21,193.76x = 31,789.32 × 9,503.12
  4. Step 4: Simplify right side
    21,193.76x = 302,097,722.68
  5. Step 5: Solve for x
    x = 302,097,722.68/21,193.76
  6. Step 6: Final answer
    x = 14,254.09

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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.