Home / 42,853.53-64,321.80-20,682.48

Finding the Fourth Proportional to 42,853.53, 64,321.80 and 20,682.48

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Solution

The fourth proportional to 42,853.53, 64,321.80 and 20,682.48 is: 31,043.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,853.53 : 64,321.80 = 20,682.48 : x
  2. Step 2: Convert to fraction form
    42,853.53/64,321.80 = 20,682.48/x
  3. Step 3: Cross multiply
    42,853.53x = 64,321.80 × 20,682.48
  4. Step 4: Simplify right side
    42,853.53x = 1,330,334,342.06
  5. Step 5: Solve for x
    x = 1,330,334,342.06/42,853.53
  6. Step 6: Final answer
    x = 31,043.75

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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.