Home / 10,679.87-14,738.80-6,142.50

Finding the Fourth Proportional to 10,679.87, 14,738.80 and 6,142.50

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Solution

The fourth proportional to 10,679.87, 14,738.80 and 6,142.50 is: 8,476.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,679.87 : 14,738.80 = 6,142.50 : x
  2. Step 2: Convert to fraction form
    10,679.87/14,738.80 = 6,142.50/x
  3. Step 3: Cross multiply
    10,679.87x = 14,738.80 × 6,142.50
  4. Step 4: Simplify right side
    10,679.87x = 90,533,079
  5. Step 5: Solve for x
    x = 90,533,079/10,679.87
  6. Step 6: Final answer
    x = 8,476.98

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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.