Home / 21,176.64-31,767.12-6,386.04

Finding the Fourth Proportional to 21,176.64, 31,767.12 and 6,386.04

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Solution

The fourth proportional to 21,176.64, 31,767.12 and 6,386.04 is: 9,579.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.64 : 31,767.12 = 6,386.04 : x
  2. Step 2: Convert to fraction form
    21,176.64/31,767.12 = 6,386.04/x
  3. Step 3: Cross multiply
    21,176.64x = 31,767.12 × 6,386.04
  4. Step 4: Simplify right side
    21,176.64x = 202,866,099.00
  5. Step 5: Solve for x
    x = 202,866,099.00/21,176.64
  6. Step 6: Final answer
    x = 9,579.71

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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.