Home / 42,765.18-64,149.93-13,203.24

Finding the Fourth Proportional to 42,765.18, 64,149.93 and 13,203.24

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Solution

The fourth proportional to 42,765.18, 64,149.93 and 13,203.24 is: 19,805.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,765.18 : 64,149.93 = 13,203.24 : x
  2. Step 2: Convert to fraction form
    42,765.18/64,149.93 = 13,203.24/x
  3. Step 3: Cross multiply
    42,765.18x = 64,149.93 × 13,203.24
  4. Step 4: Simplify right side
    42,765.18x = 846,986,921.77
  5. Step 5: Solve for x
    x = 846,986,921.77/42,765.18
  6. Step 6: Final answer
    x = 19,805.53

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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.