Home / 10,856.25-14,981.63-6,140.43

Finding the Fourth Proportional to 10,856.25, 14,981.63 and 6,140.43

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Solution

The fourth proportional to 10,856.25, 14,981.63 and 6,140.43 is: 8,473.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,856.25 : 14,981.63 = 6,140.43 : x
  2. Step 2: Convert to fraction form
    10,856.25/14,981.63 = 6,140.43/x
  3. Step 3: Cross multiply
    10,856.25x = 14,981.63 × 6,140.43
  4. Step 4: Simplify right side
    10,856.25x = 91,993,650.30
  5. Step 5: Solve for x
    x = 91,993,650.30/10,856.25
  6. Step 6: Final answer
    x = 8,473.80

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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.