Home / 21,246.10-31,871.23-7,740.94

Finding the Fourth Proportional to 21,246.10, 31,871.23 and 7,740.94

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Solution

The fourth proportional to 21,246.10, 31,871.23 and 7,740.94 is: 11,612.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.10 : 31,871.23 = 7,740.94 : x
  2. Step 2: Convert to fraction form
    21,246.10/31,871.23 = 7,740.94/x
  3. Step 3: Cross multiply
    21,246.10x = 31,871.23 × 7,740.94
  4. Step 4: Simplify right side
    21,246.10x = 246,713,378.19
  5. Step 5: Solve for x
    x = 246,713,378.19/21,246.10
  6. Step 6: Final answer
    x = 11,612.17

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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.