Home / 30,203.12-45,238.44-21,411.38

Finding the Fourth Proportional to 30,203.12, 45,238.44 and 21,411.38

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Solution

The fourth proportional to 30,203.12, 45,238.44 and 21,411.38 is: 32,070.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,203.12 : 45,238.44 = 21,411.38 : x
  2. Step 2: Convert to fraction form
    30,203.12/45,238.44 = 21,411.38/x
  3. Step 3: Cross multiply
    30,203.12x = 45,238.44 × 21,411.38
  4. Step 4: Simplify right side
    30,203.12x = 968,617,429.45
  5. Step 5: Solve for x
    x = 968,617,429.45/30,203.12
  6. Step 6: Final answer
    x = 32,070.11

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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.