Home / 15,419.02-21,278.26-8,345.46

Finding the Fourth Proportional to 15,419.02, 21,278.26 and 8,345.46

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Solution

The fourth proportional to 15,419.02, 21,278.26 and 8,345.46 is: 11,516.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,419.02 : 21,278.26 = 8,345.46 : x
  2. Step 2: Convert to fraction form
    15,419.02/21,278.26 = 8,345.46/x
  3. Step 3: Cross multiply
    15,419.02x = 21,278.26 × 8,345.46
  4. Step 4: Simplify right side
    15,419.02x = 177,576,867.70
  5. Step 5: Solve for x
    x = 177,576,867.70/15,419.02
  6. Step 6: Final answer
    x = 11,516.74

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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.