Home / 42,318.48-63,478.26-18,940.08

Finding the Fourth Proportional to 42,318.48, 63,478.26 and 18,940.08

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Solution

The fourth proportional to 42,318.48, 63,478.26 and 18,940.08 is: 28,410.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,318.48 : 63,478.26 = 18,940.08 : x
  2. Step 2: Convert to fraction form
    42,318.48/63,478.26 = 18,940.08/x
  3. Step 3: Cross multiply
    42,318.48x = 63,478.26 × 18,940.08
  4. Step 4: Simplify right side
    42,318.48x = 1,202,283,322.66
  5. Step 5: Solve for x
    x = 1,202,283,322.66/42,318.48
  6. Step 6: Final answer
    x = 28,410.36

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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.