Home / 20,859.36-28,783.92-11,784.24

Finding the Fourth Proportional to 20,859.36, 28,783.92 and 11,784.24

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Solution

The fourth proportional to 20,859.36, 28,783.92 and 11,784.24 is: 16,261.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.36 : 28,783.92 = 11,784.24 : x
  2. Step 2: Convert to fraction form
    20,859.36/28,783.92 = 11,784.24/x
  3. Step 3: Cross multiply
    20,859.36x = 28,783.92 × 11,784.24
  4. Step 4: Simplify right side
    20,859.36x = 339,196,621.42
  5. Step 5: Solve for x
    x = 339,196,621.42/20,859.36
  6. Step 6: Final answer
    x = 16,261.12

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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.