Home / 21,143.16-29,175.48-12,068.64

Finding the Fourth Proportional to 21,143.16, 29,175.48 and 12,068.64

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Solution

The fourth proportional to 21,143.16, 29,175.48 and 12,068.64 is: 16,653.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.16 : 29,175.48 = 12,068.64 : x
  2. Step 2: Convert to fraction form
    21,143.16/29,175.48 = 12,068.64/x
  3. Step 3: Cross multiply
    21,143.16x = 29,175.48 × 12,068.64
  4. Step 4: Simplify right side
    21,143.16x = 352,108,364.95
  5. Step 5: Solve for x
    x = 352,108,364.95/21,143.16
  6. Step 6: Final answer
    x = 16,653.54

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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.