Home / 21,082.95-31,623.96-6,291.54

Finding the Fourth Proportional to 21,082.95, 31,623.96 and 6,291.54

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Solution

The fourth proportional to 21,082.95, 31,623.96 and 6,291.54 is: 9,437.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.95 : 31,623.96 = 6,291.54 : x
  2. Step 2: Convert to fraction form
    21,082.95/31,623.96 = 6,291.54/x
  3. Step 3: Cross multiply
    21,082.95x = 31,623.96 × 6,291.54
  4. Step 4: Simplify right side
    21,082.95x = 198,963,409.30
  5. Step 5: Solve for x
    x = 198,963,409.30/21,082.95
  6. Step 6: Final answer
    x = 9,437.17

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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.