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Finding the Fourth Proportional to 30,252.80, 45,400.80 and 17,091.20

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Solution

The fourth proportional to 30,252.80, 45,400.80 and 17,091.20 is: 25,649.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,252.80 : 45,400.80 = 17,091.20 : x
  2. Step 2: Convert to fraction form
    30,252.80/45,400.80 = 17,091.20/x
  3. Step 3: Cross multiply
    30,252.80x = 45,400.80 × 17,091.20
  4. Step 4: Simplify right side
    30,252.80x = 775,954,152.96
  5. Step 5: Solve for x
    x = 775,954,152.96/30,252.80
  6. Step 6: Final answer
    x = 25,649.00

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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.