Home / 15,726.07-21,702.31-8,652.51

Finding the Fourth Proportional to 15,726.07, 21,702.31 and 8,652.51

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Solution

The fourth proportional to 15,726.07, 21,702.31 and 8,652.51 is: 11,940.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,726.07 : 21,702.31 = 8,652.51 : x
  2. Step 2: Convert to fraction form
    15,726.07/21,702.31 = 8,652.51/x
  3. Step 3: Cross multiply
    15,726.07x = 21,702.31 × 8,652.51
  4. Step 4: Simplify right side
    15,726.07x = 187,779,324.16
  5. Step 5: Solve for x
    x = 187,779,324.16/15,726.07
  6. Step 6: Final answer
    x = 11,940.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.