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Finding the Fourth Proportional to 10,662.03, 14,721.42 and 6,887.40

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Solution

The fourth proportional to 10,662.03, 14,721.42 and 6,887.40 is: 9,509.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,662.03 : 14,721.42 = 6,887.40 : x
  2. Step 2: Convert to fraction form
    10,662.03/14,721.42 = 6,887.40/x
  3. Step 3: Cross multiply
    10,662.03x = 14,721.42 × 6,887.40
  4. Step 4: Simplify right side
    10,662.03x = 101,392,308.11
  5. Step 5: Solve for x
    x = 101,392,308.11/10,662.03
  6. Step 6: Final answer
    x = 9,509.66

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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.