Home / 20,220.60-27,779.01-16,672.80

Finding the Fourth Proportional to 20,220.60, 27,779.01 and 16,672.80

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Solution

The fourth proportional to 20,220.60, 27,779.01 and 16,672.80 is: 22,905.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.60 : 27,779.01 = 16,672.80 : x
  2. Step 2: Convert to fraction form
    20,220.60/27,779.01 = 16,672.80/x
  3. Step 3: Cross multiply
    20,220.60x = 27,779.01 × 16,672.80
  4. Step 4: Simplify right side
    20,220.60x = 463,153,877.93
  5. Step 5: Solve for x
    x = 463,153,877.93/20,220.60
  6. Step 6: Final answer
    x = 22,905.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.