Home / 15,660.10-21,610.35-8,586.37

Finding the Fourth Proportional to 15,660.10, 21,610.35 and 8,586.37

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Solution

The fourth proportional to 15,660.10, 21,610.35 and 8,586.37 is: 11,848.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.10 : 21,610.35 = 8,586.37 : x
  2. Step 2: Convert to fraction form
    15,660.10/21,610.35 = 8,586.37/x
  3. Step 3: Cross multiply
    15,660.10x = 21,610.35 × 8,586.37
  4. Step 4: Simplify right side
    15,660.10x = 185,554,460.93
  5. Step 5: Solve for x
    x = 185,554,460.93/15,660.10
  6. Step 6: Final answer
    x = 11,848.87

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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.