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Finding the Fourth Proportional to 14,210.79, 19,612.38 and 7,839.03

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Solution

The fourth proportional to 14,210.79, 19,612.38 and 7,839.03 is: 10,818.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,210.79 : 19,612.38 = 7,839.03 : x
  2. Step 2: Convert to fraction form
    14,210.79/19,612.38 = 7,839.03/x
  3. Step 3: Cross multiply
    14,210.79x = 19,612.38 × 7,839.03
  4. Step 4: Simplify right side
    14,210.79x = 153,741,983.72
  5. Step 5: Solve for x
    x = 153,741,983.72/14,210.79
  6. Step 6: Final answer
    x = 10,818.68

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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.