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Finding the Fourth Proportional to 10,859.73, 14,985.72 and 6,078.87

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Solution

The fourth proportional to 10,859.73, 14,985.72 and 6,078.87 is: 8,388.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.73 : 14,985.72 = 6,078.87 : x
  2. Step 2: Convert to fraction form
    10,859.73/14,985.72 = 6,078.87/x
  3. Step 3: Cross multiply
    10,859.73x = 14,985.72 × 6,078.87
  4. Step 4: Simplify right side
    10,859.73x = 91,096,243.74
  5. Step 5: Solve for x
    x = 91,096,243.74/10,859.73
  6. Step 6: Final answer
    x = 8,388.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.