Home / 21,045.24-31,566.60-7,896.51

Finding the Fourth Proportional to 21,045.24, 31,566.60 and 7,896.51

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Solution

The fourth proportional to 21,045.24, 31,566.60 and 7,896.51 is: 11,844.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.24 : 31,566.60 = 7,896.51 : x
  2. Step 2: Convert to fraction form
    21,045.24/31,566.60 = 7,896.51/x
  3. Step 3: Cross multiply
    21,045.24x = 31,566.60 × 7,896.51
  4. Step 4: Simplify right side
    21,045.24x = 249,265,972.57
  5. Step 5: Solve for x
    x = 249,265,972.57/21,045.24
  6. Step 6: Final answer
    x = 11,844.29

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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.