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Finding the Fourth Proportional to 14,139.11, 21,178.93 and 6,736.11

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Solution

The fourth proportional to 14,139.11, 21,178.93 and 6,736.11 is: 10,090.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.11 : 21,178.93 = 6,736.11 : x
  2. Step 2: Convert to fraction form
    14,139.11/21,178.93 = 6,736.11/x
  3. Step 3: Cross multiply
    14,139.11x = 21,178.93 × 6,736.11
  4. Step 4: Simplify right side
    14,139.11x = 142,663,602.16
  5. Step 5: Solve for x
    x = 142,663,602.16/14,139.11
  6. Step 6: Final answer
    x = 10,090.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.