Home / 20,788.08-28,686.04-11,835.28

Finding the Fourth Proportional to 20,788.08, 28,686.04 and 11,835.28

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Solution

The fourth proportional to 20,788.08, 28,686.04 and 11,835.28 is: 16,331.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.08 : 28,686.04 = 11,835.28 : x
  2. Step 2: Convert to fraction form
    20,788.08/28,686.04 = 11,835.28/x
  3. Step 3: Cross multiply
    20,788.08x = 28,686.04 × 11,835.28
  4. Step 4: Simplify right side
    20,788.08x = 339,507,315.49
  5. Step 5: Solve for x
    x = 339,507,315.49/20,788.08
  6. Step 6: Final answer
    x = 16,331.83

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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.