Home / 20,410.27-28,177.89-13,602.49

Finding the Fourth Proportional to 20,410.27, 28,177.89 and 13,602.49

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Solution

The fourth proportional to 20,410.27, 28,177.89 and 13,602.49 is: 18,779.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.27 : 28,177.89 = 13,602.49 : x
  2. Step 2: Convert to fraction form
    20,410.27/28,177.89 = 13,602.49/x
  3. Step 3: Cross multiply
    20,410.27x = 28,177.89 × 13,602.49
  4. Step 4: Simplify right side
    20,410.27x = 383,289,466.95
  5. Step 5: Solve for x
    x = 383,289,466.95/20,410.27
  6. Step 6: Final answer
    x = 18,779.25

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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.