Home / 31,803.20-43,909.80-28,435.28

Finding the Fourth Proportional to 31,803.20, 43,909.80 and 28,435.28

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Solution

The fourth proportional to 31,803.20, 43,909.80 and 28,435.28 is: 39,259.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,803.20 : 43,909.80 = 28,435.28 : x
  2. Step 2: Convert to fraction form
    31,803.20/43,909.80 = 28,435.28/x
  3. Step 3: Cross multiply
    31,803.20x = 43,909.80 × 28,435.28
  4. Step 4: Simplify right side
    31,803.20x = 1,248,587,457.74
  5. Step 5: Solve for x
    x = 1,248,587,457.74/31,803.20
  6. Step 6: Final answer
    x = 39,259.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.