Home / 21,324.18-31,985.35-7,285.46

Finding the Fourth Proportional to 21,324.18, 31,985.35 and 7,285.46

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Solution

The fourth proportional to 21,324.18, 31,985.35 and 7,285.46 is: 10,927.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.18 : 31,985.35 = 7,285.46 : x
  2. Step 2: Convert to fraction form
    21,324.18/31,985.35 = 7,285.46/x
  3. Step 3: Cross multiply
    21,324.18x = 31,985.35 × 7,285.46
  4. Step 4: Simplify right side
    21,324.18x = 233,027,988.01
  5. Step 5: Solve for x
    x = 233,027,988.01/21,324.18
  6. Step 6: Final answer
    x = 10,927.88

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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.