Home / 42,221.98-63,303.81-18,518.14

Finding the Fourth Proportional to 42,221.98, 63,303.81 and 18,518.14

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Solution

The fourth proportional to 42,221.98, 63,303.81 and 18,518.14 is: 27,764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,221.98 : 63,303.81 = 18,518.14 : x
  2. Step 2: Convert to fraction form
    42,221.98/63,303.81 = 18,518.14/x
  3. Step 3: Cross multiply
    42,221.98x = 63,303.81 × 18,518.14
  4. Step 4: Simplify right side
    42,221.98x = 1,172,268,816.11
  5. Step 5: Solve for x
    x = 1,172,268,816.11/42,221.98
  6. Step 6: Final answer
    x = 27,764.42

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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.