Home / 21,066.78-29,071.95-12,114.36

Finding the Fourth Proportional to 21,066.78, 29,071.95 and 12,114.36

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Solution

The fourth proportional to 21,066.78, 29,071.95 and 12,114.36 is: 16,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.78 : 29,071.95 = 12,114.36 : x
  2. Step 2: Convert to fraction form
    21,066.78/29,071.95 = 12,114.36/x
  3. Step 3: Cross multiply
    21,066.78x = 29,071.95 × 12,114.36
  4. Step 4: Simplify right side
    21,066.78x = 352,188,068.20
  5. Step 5: Solve for x
    x = 352,188,068.20/21,066.78
  6. Step 6: Final answer
    x = 16,717.70

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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.