Home / 20,847.16-28,773.54-13,291.75

Finding the Fourth Proportional to 20,847.16, 28,773.54 and 13,291.75

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Solution

The fourth proportional to 20,847.16, 28,773.54 and 13,291.75 is: 18,345.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,847.16 : 28,773.54 = 13,291.75 : x
  2. Step 2: Convert to fraction form
    20,847.16/28,773.54 = 13,291.75/x
  3. Step 3: Cross multiply
    20,847.16x = 28,773.54 × 13,291.75
  4. Step 4: Simplify right side
    20,847.16x = 382,450,700.30
  5. Step 5: Solve for x
    x = 382,450,700.30/20,847.16
  6. Step 6: Final answer
    x = 18,345.46

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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.