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Finding the Fourth Proportional to 10,803.13, 14,913.31 and 7,619.02

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Solution

The fourth proportional to 10,803.13, 14,913.31 and 7,619.02 is: 10,517.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,803.13 : 14,913.31 = 7,619.02 : x
  2. Step 2: Convert to fraction form
    10,803.13/14,913.31 = 7,619.02/x
  3. Step 3: Cross multiply
    10,803.13x = 14,913.31 × 7,619.02
  4. Step 4: Simplify right side
    10,803.13x = 113,624,807.16
  5. Step 5: Solve for x
    x = 113,624,807.16/10,803.13
  6. Step 6: Final answer
    x = 10,517.77

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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.