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Finding the Fourth Proportional to 10,662.80, 14,720.67 and 7,394.45

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Solution

The fourth proportional to 10,662.80, 14,720.67 and 7,394.45 is: 10,208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,662.80 : 14,720.67 = 7,394.45 : x
  2. Step 2: Convert to fraction form
    10,662.80/14,720.67 = 7,394.45/x
  3. Step 3: Cross multiply
    10,662.80x = 14,720.67 × 7,394.45
  4. Step 4: Simplify right side
    10,662.80x = 108,851,184.68
  5. Step 5: Solve for x
    x = 108,851,184.68/10,662.80
  6. Step 6: Final answer
    x = 10,208.50

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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.