Home / 15,689.76-21,652.37-8,616.34

Finding the Fourth Proportional to 15,689.76, 21,652.37 and 8,616.34

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Solution

The fourth proportional to 15,689.76, 21,652.37 and 8,616.34 is: 11,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,689.76 : 21,652.37 = 8,616.34 : x
  2. Step 2: Convert to fraction form
    15,689.76/21,652.37 = 8,616.34/x
  3. Step 3: Cross multiply
    15,689.76x = 21,652.37 × 8,616.34
  4. Step 4: Simplify right side
    15,689.76x = 186,564,181.73
  5. Step 5: Solve for x
    x = 186,564,181.73/15,689.76
  6. Step 6: Final answer
    x = 11,890.82

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1.5x scale

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.