Home / 21,262.45-31,885.44-7,220.11

Finding the Fourth Proportional to 21,262.45, 31,885.44 and 7,220.11

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Solution

The fourth proportional to 21,262.45, 31,885.44 and 7,220.11 is: 10,827.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,262.45 : 31,885.44 = 7,220.11 : x
  2. Step 2: Convert to fraction form
    21,262.45/31,885.44 = 7,220.11/x
  3. Step 3: Cross multiply
    21,262.45x = 31,885.44 × 7,220.11
  4. Step 4: Simplify right side
    21,262.45x = 230,216,384.20
  5. Step 5: Solve for x
    x = 230,216,384.20/21,262.45
  6. Step 6: Final answer
    x = 10,827.37

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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.