Home / 13,642.02-20,458.62-5,319.99

Finding the Fourth Proportional to 13,642.02, 20,458.62 and 5,319.99

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Solution

The fourth proportional to 13,642.02, 20,458.62 and 5,319.99 is: 7,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,642.02 : 20,458.62 = 5,319.99 : x
  2. Step 2: Convert to fraction form
    13,642.02/20,458.62 = 5,319.99/x
  3. Step 3: Cross multiply
    13,642.02x = 20,458.62 × 5,319.99
  4. Step 4: Simplify right side
    13,642.02x = 108,839,653.81
  5. Step 5: Solve for x
    x = 108,839,653.81/13,642.02
  6. Step 6: Final answer
    x = 7,978.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.