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Finding the Fourth Proportional to 28,996.48, 40,014.48 and 17,057.20

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Solution

The fourth proportional to 28,996.48, 40,014.48 and 17,057.20 is: 23,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,996.48 : 40,014.48 = 17,057.20 : x
  2. Step 2: Convert to fraction form
    28,996.48/40,014.48 = 17,057.20/x
  3. Step 3: Cross multiply
    28,996.48x = 40,014.48 × 17,057.20
  4. Step 4: Simplify right side
    28,996.48x = 682,534,988.26
  5. Step 5: Solve for x
    x = 682,534,988.26/28,996.48
  6. Step 6: Final answer
    x = 23,538.55

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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.