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Finding the Fourth Proportional to 33,235.40, 45,866.01 and 18,128.90

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Solution

The fourth proportional to 33,235.40, 45,866.01 and 18,128.90 is: 25,018.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,235.40 : 45,866.01 = 18,128.90 : x
  2. Step 2: Convert to fraction form
    33,235.40/45,866.01 = 18,128.90/x
  3. Step 3: Cross multiply
    33,235.40x = 45,866.01 × 18,128.90
  4. Step 4: Simplify right side
    33,235.40x = 831,500,308.69
  5. Step 5: Solve for x
    x = 831,500,308.69/33,235.40
  6. Step 6: Final answer
    x = 25,018.51

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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.