Home / 15,518.64-21,417.30-9,147.21

Finding the Fourth Proportional to 15,518.64, 21,417.30 and 9,147.21

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Solution

The fourth proportional to 15,518.64, 21,417.30 and 9,147.21 is: 12,624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.64 : 21,417.30 = 9,147.21 : x
  2. Step 2: Convert to fraction form
    15,518.64/21,417.30 = 9,147.21/x
  3. Step 3: Cross multiply
    15,518.64x = 21,417.30 × 9,147.21
  4. Step 4: Simplify right side
    15,518.64x = 195,908,540.73
  5. Step 5: Solve for x
    x = 195,908,540.73/15,518.64
  6. Step 6: Final answer
    x = 12,624.08

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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.