Home / 21,656.32-29,885.49-12,702.11

Finding the Fourth Proportional to 21,656.32, 29,885.49 and 12,702.11

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Solution

The fourth proportional to 21,656.32, 29,885.49 and 12,702.11 is: 17,528.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,656.32 : 29,885.49 = 12,702.11 : x
  2. Step 2: Convert to fraction form
    21,656.32/29,885.49 = 12,702.11/x
  3. Step 3: Cross multiply
    21,656.32x = 29,885.49 × 12,702.11
  4. Step 4: Simplify right side
    21,656.32x = 379,608,631.96
  5. Step 5: Solve for x
    x = 379,608,631.96/21,656.32
  6. Step 6: Final answer
    x = 17,528.77

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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.