Home / 68,835.02-103,253.65-18,914.80

Finding the Fourth Proportional to 68,835.02, 103,253.65 and 18,914.80

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Solution

The fourth proportional to 68,835.02, 103,253.65 and 18,914.80 is: 28,372.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,835.02 : 103,253.65 = 18,914.80 : x
  2. Step 2: Convert to fraction form
    68,835.02/103,253.65 = 18,914.80/x
  3. Step 3: Cross multiply
    68,835.02x = 103,253.65 × 18,914.80
  4. Step 4: Simplify right side
    68,835.02x = 1,953,022,133.60
  5. Step 5: Solve for x
    x = 1,953,022,133.60/68,835.02
  6. Step 6: Final answer
    x = 28,372.51

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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.