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Finding the Fourth Proportional to 12,555.24, 18,838.14 and 6,321

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Solution

The fourth proportional to 12,555.24, 18,838.14 and 6,321 is: 9,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.24 : 18,838.14 = 6,321 : x
  2. Step 2: Convert to fraction form
    12,555.24/18,838.14 = 6,321/x
  3. Step 3: Cross multiply
    12,555.24x = 18,838.14 × 6,321
  4. Step 4: Simplify right side
    12,555.24x = 119,075,882.94
  5. Step 5: Solve for x
    x = 119,075,882.94/12,555.24
  6. Step 6: Final answer
    x = 9,484.16

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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.