Home / 21,702.53-29,950.97-12,143.32

Finding the Fourth Proportional to 21,702.53, 29,950.97 and 12,143.32

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Solution

The fourth proportional to 21,702.53, 29,950.97 and 12,143.32 is: 16,758.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.53 : 29,950.97 = 12,143.32 : x
  2. Step 2: Convert to fraction form
    21,702.53/29,950.97 = 12,143.32/x
  3. Step 3: Cross multiply
    21,702.53x = 29,950.97 × 12,143.32
  4. Step 4: Simplify right side
    21,702.53x = 363,704,077.43
  5. Step 5: Solve for x
    x = 363,704,077.43/21,702.53
  6. Step 6: Final answer
    x = 16,758.60

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1.5x scale

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.