Home / 21,306.88-31,973.20-8,827.20

Finding the Fourth Proportional to 21,306.88, 31,973.20 and 8,827.20

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Solution

The fourth proportional to 21,306.88, 31,973.20 and 8,827.20 is: 13,246.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.88 : 31,973.20 = 8,827.20 : x
  2. Step 2: Convert to fraction form
    21,306.88/31,973.20 = 8,827.20/x
  3. Step 3: Cross multiply
    21,306.88x = 31,973.20 × 8,827.20
  4. Step 4: Simplify right side
    21,306.88x = 282,233,831.04
  5. Step 5: Solve for x
    x = 282,233,831.04/21,306.88
  6. Step 6: Final answer
    x = 13,246.14

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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.