Home / 21,187.17-31,785.48-6,956.28

Finding the Fourth Proportional to 21,187.17, 31,785.48 and 6,956.28

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Solution

The fourth proportional to 21,187.17, 31,785.48 and 6,956.28 is: 10,435.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.17 : 31,785.48 = 6,956.28 : x
  2. Step 2: Convert to fraction form
    21,187.17/31,785.48 = 6,956.28/x
  3. Step 3: Cross multiply
    21,187.17x = 31,785.48 × 6,956.28
  4. Step 4: Simplify right side
    21,187.17x = 221,108,698.81
  5. Step 5: Solve for x
    x = 221,108,698.81/21,187.17
  6. Step 6: Final answer
    x = 10,435.97

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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.