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Finding the Fourth Proportional to 14,129.66, 21,190.08 and 4,893.50

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Solution

The fourth proportional to 14,129.66, 21,190.08 and 4,893.50 is: 7,338.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.66 : 21,190.08 = 4,893.50 : x
  2. Step 2: Convert to fraction form
    14,129.66/21,190.08 = 4,893.50/x
  3. Step 3: Cross multiply
    14,129.66x = 21,190.08 × 4,893.50
  4. Step 4: Simplify right side
    14,129.66x = 103,693,656.48
  5. Step 5: Solve for x
    x = 103,693,656.48/14,129.66
  6. Step 6: Final answer
    x = 7,338.72

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1.5x scale

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.