Home / 39,901.20-59,859.90-13,608.60

Finding the Fourth Proportional to 39,901.20, 59,859.90 and 13,608.60

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Solution

The fourth proportional to 39,901.20, 59,859.90 and 13,608.60 is: 20,415.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,901.20 : 59,859.90 = 13,608.60 : x
  2. Step 2: Convert to fraction form
    39,901.20/59,859.90 = 13,608.60/x
  3. Step 3: Cross multiply
    39,901.20x = 59,859.90 × 13,608.60
  4. Step 4: Simplify right side
    39,901.20x = 814,609,435.14
  5. Step 5: Solve for x
    x = 814,609,435.14/39,901.20
  6. Step 6: Final answer
    x = 20,415.66

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1.5x scale

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.