Home / 21,657.07-29,886.53-12,702.86

Finding the Fourth Proportional to 21,657.07, 29,886.53 and 12,702.86

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Solution

The fourth proportional to 21,657.07, 29,886.53 and 12,702.86 is: 17,529.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.07 : 29,886.53 = 12,702.86 : x
  2. Step 2: Convert to fraction form
    21,657.07/29,886.53 = 12,702.86/x
  3. Step 3: Cross multiply
    21,657.07x = 29,886.53 × 12,702.86
  4. Step 4: Simplify right side
    21,657.07x = 379,644,193.53
  5. Step 5: Solve for x
    x = 379,644,193.53/21,657.07
  6. Step 6: Final answer
    x = 17,529.81

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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.