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Finding the Fourth Proportional to 12,668.74, 17,503.20 and 10,800.08

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Solution

The fourth proportional to 12,668.74, 17,503.20 and 10,800.08 is: 14,921.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,668.74 : 17,503.20 = 10,800.08 : x
  2. Step 2: Convert to fraction form
    12,668.74/17,503.20 = 10,800.08/x
  3. Step 3: Cross multiply
    12,668.74x = 17,503.20 × 10,800.08
  4. Step 4: Simplify right side
    12,668.74x = 189,035,960.26
  5. Step 5: Solve for x
    x = 189,035,960.26/12,668.74
  6. Step 6: Final answer
    x = 14,921.45

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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.