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Finding the Fourth Proportional to 12,294.83, 18,437.72 and 4,395.21

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Solution

The fourth proportional to 12,294.83, 18,437.72 and 4,395.21 is: 6,591.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,294.83 : 18,437.72 = 4,395.21 : x
  2. Step 2: Convert to fraction form
    12,294.83/18,437.72 = 4,395.21/x
  3. Step 3: Cross multiply
    12,294.83x = 18,437.72 × 4,395.21
  4. Step 4: Simplify right side
    12,294.83x = 81,037,537.16
  5. Step 5: Solve for x
    x = 81,037,537.16/12,294.83
  6. Step 6: Final answer
    x = 6,591.19

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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.