Home / 20,762.16-28,651.68-11,330.64

Finding the Fourth Proportional to 20,762.16, 28,651.68 and 11,330.64

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Solution

The fourth proportional to 20,762.16, 28,651.68 and 11,330.64 is: 15,636.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.16 : 28,651.68 = 11,330.64 : x
  2. Step 2: Convert to fraction form
    20,762.16/28,651.68 = 11,330.64/x
  3. Step 3: Cross multiply
    20,762.16x = 28,651.68 × 11,330.64
  4. Step 4: Simplify right side
    20,762.16x = 324,641,871.48
  5. Step 5: Solve for x
    x = 324,641,871.48/20,762.16
  6. Step 6: Final answer
    x = 15,636.23

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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.