Home / 15,511.02-21,405.61-8,795.35

Finding the Fourth Proportional to 15,511.02, 21,405.61 and 8,795.35

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Solution

The fourth proportional to 15,511.02, 21,405.61 and 8,795.35 is: 12,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511.02 : 21,405.61 = 8,795.35 : x
  2. Step 2: Convert to fraction form
    15,511.02/21,405.61 = 8,795.35/x
  3. Step 3: Cross multiply
    15,511.02x = 21,405.61 × 8,795.35
  4. Step 4: Simplify right side
    15,511.02x = 188,269,831.91
  5. Step 5: Solve for x
    x = 188,269,831.91/15,511.02
  6. Step 6: Final answer
    x = 12,137.81

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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.