Home / 21,320.27-31,983.32-7,276.52

Finding the Fourth Proportional to 21,320.27, 31,983.32 and 7,276.52

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Solution

The fourth proportional to 21,320.27, 31,983.32 and 7,276.52 is: 10,915.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.27 : 31,983.32 = 7,276.52 : x
  2. Step 2: Convert to fraction form
    21,320.27/31,983.32 = 7,276.52/x
  3. Step 3: Cross multiply
    21,320.27x = 31,983.32 × 7,276.52
  4. Step 4: Simplify right side
    21,320.27x = 232,727,267.65
  5. Step 5: Solve for x
    x = 232,727,267.65/21,320.27
  6. Step 6: Final answer
    x = 10,915.77

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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.