Home / 28,847.70-39,814.20-20,887.02

Finding the Fourth Proportional to 28,847.70, 39,814.20 and 20,887.02

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Solution

The fourth proportional to 28,847.70, 39,814.20 and 20,887.02 is: 28,827.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,847.70 : 39,814.20 = 20,887.02 : x
  2. Step 2: Convert to fraction form
    28,847.70/39,814.20 = 20,887.02/x
  3. Step 3: Cross multiply
    28,847.70x = 39,814.20 × 20,887.02
  4. Step 4: Simplify right side
    28,847.70x = 831,599,991.68
  5. Step 5: Solve for x
    x = 831,599,991.68/28,847.70
  6. Step 6: Final answer
    x = 28,827.25

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1.5x scale

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.