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Finding the Fourth Proportional to 10,781.84, 14,878.64 and 6,066

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Solution

The fourth proportional to 10,781.84, 14,878.64 and 6,066 is: 8,370.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.84 : 14,878.64 = 6,066 : x
  2. Step 2: Convert to fraction form
    10,781.84/14,878.64 = 6,066/x
  3. Step 3: Cross multiply
    10,781.84x = 14,878.64 × 6,066
  4. Step 4: Simplify right side
    10,781.84x = 90,253,830.24
  5. Step 5: Solve for x
    x = 90,253,830.24/10,781.84
  6. Step 6: Final answer
    x = 8,370.91

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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.