Home / 21,096.36-31,642.50-8,617.50

Finding the Fourth Proportional to 21,096.36, 31,642.50 and 8,617.50

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Solution

The fourth proportional to 21,096.36, 31,642.50 and 8,617.50 is: 12,925.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,096.36 : 31,642.50 = 8,617.50 : x
  2. Step 2: Convert to fraction form
    21,096.36/31,642.50 = 8,617.50/x
  3. Step 3: Cross multiply
    21,096.36x = 31,642.50 × 8,617.50
  4. Step 4: Simplify right side
    21,096.36x = 272,679,243.75
  5. Step 5: Solve for x
    x = 272,679,243.75/21,096.36
  6. Step 6: Final answer
    x = 12,925.42

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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.