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Finding the Fourth Proportional to 10,861.54, 14,990.53 and 6,883.02

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Solution

The fourth proportional to 10,861.54, 14,990.53 and 6,883.02 is: 9,499.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.54 : 14,990.53 = 6,883.02 : x
  2. Step 2: Convert to fraction form
    10,861.54/14,990.53 = 6,883.02/x
  3. Step 3: Cross multiply
    10,861.54x = 14,990.53 × 6,883.02
  4. Step 4: Simplify right side
    10,861.54x = 103,180,117.80
  5. Step 5: Solve for x
    x = 103,180,117.80/10,861.54
  6. Step 6: Final answer
    x = 9,499.58

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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.