Home / 20,409.03-28,170.28-11,913.14

Finding the Fourth Proportional to 20,409.03, 28,170.28 and 11,913.14

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Solution

The fourth proportional to 20,409.03, 28,170.28 and 11,913.14 is: 16,443.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.03 : 28,170.28 = 11,913.14 : x
  2. Step 2: Convert to fraction form
    20,409.03/28,170.28 = 11,913.14/x
  3. Step 3: Cross multiply
    20,409.03x = 28,170.28 × 11,913.14
  4. Step 4: Simplify right side
    20,409.03x = 335,596,574.80
  5. Step 5: Solve for x
    x = 335,596,574.80/20,409.03
  6. Step 6: Final answer
    x = 16,443.53

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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.