Home / 20,860.99-28,788.21-11,300.83

Finding the Fourth Proportional to 20,860.99, 28,788.21 and 11,300.83

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Solution

The fourth proportional to 20,860.99, 28,788.21 and 11,300.83 is: 15,595.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.99 : 28,788.21 = 11,300.83 : x
  2. Step 2: Convert to fraction form
    20,860.99/28,788.21 = 11,300.83/x
  3. Step 3: Cross multiply
    20,860.99x = 28,788.21 × 11,300.83
  4. Step 4: Simplify right side
    20,860.99x = 325,330,610.71
  5. Step 5: Solve for x
    x = 325,330,610.71/20,860.99
  6. Step 6: Final answer
    x = 15,595.17

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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.