Home / 21,006.30-31,516.13-6,215.29

Finding the Fourth Proportional to 21,006.30, 31,516.13 and 6,215.29

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Solution

The fourth proportional to 21,006.30, 31,516.13 and 6,215.29 is: 9,324.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.30 : 31,516.13 = 6,215.29 : x
  2. Step 2: Convert to fraction form
    21,006.30/31,516.13 = 6,215.29/x
  3. Step 3: Cross multiply
    21,006.30x = 31,516.13 × 6,215.29
  4. Step 4: Simplify right side
    21,006.30x = 195,881,887.63
  5. Step 5: Solve for x
    x = 195,881,887.63/21,006.30
  6. Step 6: Final answer
    x = 9,324.91

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1.5x scale

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.