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Finding the Fourth Proportional to 10,814.40, 14,923.98 and 6,340.80

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Solution

The fourth proportional to 10,814.40, 14,923.98 and 6,340.80 is: 8,750.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,814.40 : 14,923.98 = 6,340.80 : x
  2. Step 2: Convert to fraction form
    10,814.40/14,923.98 = 6,340.80/x
  3. Step 3: Cross multiply
    10,814.40x = 14,923.98 × 6,340.80
  4. Step 4: Simplify right side
    10,814.40x = 94,629,972.38
  5. Step 5: Solve for x
    x = 94,629,972.38/10,814.40
  6. Step 6: Final answer
    x = 8,750.37

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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.