Home / 20,597.99-28,425.16-11,166.56

Finding the Fourth Proportional to 20,597.99, 28,425.16 and 11,166.56

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Solution

The fourth proportional to 20,597.99, 28,425.16 and 11,166.56 is: 15,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.99 : 28,425.16 = 11,166.56 : x
  2. Step 2: Convert to fraction form
    20,597.99/28,425.16 = 11,166.56/x
  3. Step 3: Cross multiply
    20,597.99x = 28,425.16 × 11,166.56
  4. Step 4: Simplify right side
    20,597.99x = 317,411,112.52
  5. Step 5: Solve for x
    x = 317,411,112.52/20,597.99
  6. Step 6: Final answer
    x = 15,409.81

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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.