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Finding the Fourth Proportional to 17,203.20, 23,740.80 and 10,489.20

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Solution

The fourth proportional to 17,203.20, 23,740.80 and 10,489.20 is: 14,475.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,203.20 : 23,740.80 = 10,489.20 : x
  2. Step 2: Convert to fraction form
    17,203.20/23,740.80 = 10,489.20/x
  3. Step 3: Cross multiply
    17,203.20x = 23,740.80 × 10,489.20
  4. Step 4: Simplify right side
    17,203.20x = 249,021,999.36
  5. Step 5: Solve for x
    x = 249,021,999.36/17,203.20
  6. Step 6: Final answer
    x = 14,475.33

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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.