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Finding the Fourth Proportional to 12,364.31, 18,551.21 and 7,437.44

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Solution

The fourth proportional to 12,364.31, 18,551.21 and 7,437.44 is: 11,159.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,364.31 : 18,551.21 = 7,437.44 : x
  2. Step 2: Convert to fraction form
    12,364.31/18,551.21 = 7,437.44/x
  3. Step 3: Cross multiply
    12,364.31x = 18,551.21 × 7,437.44
  4. Step 4: Simplify right side
    12,364.31x = 137,973,511.30
  5. Step 5: Solve for x
    x = 137,973,511.30/12,364.31
  6. Step 6: Final answer
    x = 11,159.01

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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.