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Finding the Fourth Proportional to 10,662.79, 15,999.59 and 7,192.75

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Solution

The fourth proportional to 10,662.79, 15,999.59 and 7,192.75 is: 10,792.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,662.79 : 15,999.59 = 7,192.75 : x
  2. Step 2: Convert to fraction form
    10,662.79/15,999.59 = 7,192.75/x
  3. Step 3: Cross multiply
    10,662.79x = 15,999.59 × 7,192.75
  4. Step 4: Simplify right side
    10,662.79x = 115,081,050.97
  5. Step 5: Solve for x
    x = 115,081,050.97/10,662.79
  6. Step 6: Final answer
    x = 10,792.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.