Home / 20,434.36-28,197.68-11,481.16

Finding the Fourth Proportional to 20,434.36, 28,197.68 and 11,481.16

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Solution

The fourth proportional to 20,434.36, 28,197.68 and 11,481.16 is: 15,843.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.36 : 28,197.68 = 11,481.16 : x
  2. Step 2: Convert to fraction form
    20,434.36/28,197.68 = 11,481.16/x
  3. Step 3: Cross multiply
    20,434.36x = 28,197.68 × 11,481.16
  4. Step 4: Simplify right side
    20,434.36x = 323,742,075.71
  5. Step 5: Solve for x
    x = 323,742,075.71/20,434.36
  6. Step 6: Final answer
    x = 15,843.02

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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.