Home / 20,212.64-27,905.02-13,509.62

Finding the Fourth Proportional to 20,212.64, 27,905.02 and 13,509.62

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Solution

The fourth proportional to 20,212.64, 27,905.02 and 13,509.62 is: 18,651.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212.64 : 27,905.02 = 13,509.62 : x
  2. Step 2: Convert to fraction form
    20,212.64/27,905.02 = 13,509.62/x
  3. Step 3: Cross multiply
    20,212.64x = 27,905.02 × 13,509.62
  4. Step 4: Simplify right side
    20,212.64x = 376,986,216.29
  5. Step 5: Solve for x
    x = 376,986,216.29/20,212.64
  6. Step 6: Final answer
    x = 18,651.01

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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.