Home / 21,058.59-31,586.06-8,579.93

Finding the Fourth Proportional to 21,058.59, 31,586.06 and 8,579.93

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Solution

The fourth proportional to 21,058.59, 31,586.06 and 8,579.93 is: 12,869.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.59 : 31,586.06 = 8,579.93 : x
  2. Step 2: Convert to fraction form
    21,058.59/31,586.06 = 8,579.93/x
  3. Step 3: Cross multiply
    21,058.59x = 31,586.06 × 8,579.93
  4. Step 4: Simplify right side
    21,058.59x = 271,006,183.78
  5. Step 5: Solve for x
    x = 271,006,183.78/21,058.59
  6. Step 6: Final answer
    x = 12,869.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.