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Finding the Fourth Proportional to 10,560.90, 14,564.07 and 7,878.04

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Solution

The fourth proportional to 10,560.90, 14,564.07 and 7,878.04 is: 10,864.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,560.90 : 14,564.07 = 7,878.04 : x
  2. Step 2: Convert to fraction form
    10,560.90/14,564.07 = 7,878.04/x
  3. Step 3: Cross multiply
    10,560.90x = 14,564.07 × 7,878.04
  4. Step 4: Simplify right side
    10,560.90x = 114,736,326.02
  5. Step 5: Solve for x
    x = 114,736,326.02/10,560.90
  6. Step 6: Final answer
    x = 10,864.26

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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.