Home / 42,009.22-63,012.20-10,419.36

Finding the Fourth Proportional to 42,009.22, 63,012.20 and 10,419.36

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Solution

The fourth proportional to 42,009.22, 63,012.20 and 10,419.36 is: 15,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,009.22 : 63,012.20 = 10,419.36 : x
  2. Step 2: Convert to fraction form
    42,009.22/63,012.20 = 10,419.36/x
  3. Step 3: Cross multiply
    42,009.22x = 63,012.20 × 10,419.36
  4. Step 4: Simplify right side
    42,009.22x = 656,546,887.98
  5. Step 5: Solve for x
    x = 656,546,887.98/42,009.22
  6. Step 6: Final answer
    x = 15,628.64

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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.