Home / 21,246.98-31,874.12-6,457.40

Finding the Fourth Proportional to 21,246.98, 31,874.12 and 6,457.40

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Solution

The fourth proportional to 21,246.98, 31,874.12 and 6,457.40 is: 9,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.98 : 31,874.12 = 6,457.40 : x
  2. Step 2: Convert to fraction form
    21,246.98/31,874.12 = 6,457.40/x
  3. Step 3: Cross multiply
    21,246.98x = 31,874.12 × 6,457.40
  4. Step 4: Simplify right side
    21,246.98x = 205,823,750.83
  5. Step 5: Solve for x
    x = 205,823,750.83/21,246.98
  6. Step 6: Final answer
    x = 9,687.20

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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.