Home / 15,515.04-21,412.80-9,230.88

Finding the Fourth Proportional to 15,515.04, 21,412.80 and 9,230.88

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Solution

The fourth proportional to 15,515.04, 21,412.80 and 9,230.88 is: 12,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.04 : 21,412.80 = 9,230.88 : x
  2. Step 2: Convert to fraction form
    15,515.04/21,412.80 = 9,230.88/x
  3. Step 3: Cross multiply
    15,515.04x = 21,412.80 × 9,230.88
  4. Step 4: Simplify right side
    15,515.04x = 197,658,987.26
  5. Step 5: Solve for x
    x = 197,658,987.26/15,515.04
  6. Step 6: Final answer
    x = 12,739.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.