Home / 21,172.88-31,765.47-9,483.35

Finding the Fourth Proportional to 21,172.88, 31,765.47 and 9,483.35

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Solution

The fourth proportional to 21,172.88, 31,765.47 and 9,483.35 is: 14,227.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.88 : 31,765.47 = 9,483.35 : x
  2. Step 2: Convert to fraction form
    21,172.88/31,765.47 = 9,483.35/x
  3. Step 3: Cross multiply
    21,172.88x = 31,765.47 × 9,483.35
  4. Step 4: Simplify right side
    21,172.88x = 301,243,069.92
  5. Step 5: Solve for x
    x = 301,243,069.92/21,172.88
  6. Step 6: Final answer
    x = 14,227.78

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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.