Home / 15,318.02-21,139.98-8,604.05

Finding the Fourth Proportional to 15,318.02, 21,139.98 and 8,604.05

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Solution

The fourth proportional to 15,318.02, 21,139.98 and 8,604.05 is: 11,874.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318.02 : 21,139.98 = 8,604.05 : x
  2. Step 2: Convert to fraction form
    15,318.02/21,139.98 = 8,604.05/x
  3. Step 3: Cross multiply
    15,318.02x = 21,139.98 × 8,604.05
  4. Step 4: Simplify right side
    15,318.02x = 181,889,339.22
  5. Step 5: Solve for x
    x = 181,889,339.22/15,318.02
  6. Step 6: Final answer
    x = 11,874.21

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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.