Home / 19,916.92-29,875.40-8,217.28

Finding the Fourth Proportional to 19,916.92, 29,875.40 and 8,217.28

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Solution

The fourth proportional to 19,916.92, 29,875.40 and 8,217.28 is: 12,325.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,916.92 : 29,875.40 = 8,217.28 : x
  2. Step 2: Convert to fraction form
    19,916.92/29,875.40 = 8,217.28/x
  3. Step 3: Cross multiply
    19,916.92x = 29,875.40 × 8,217.28
  4. Step 4: Simplify right side
    19,916.92x = 245,494,526.91
  5. Step 5: Solve for x
    x = 245,494,526.91/19,916.92
  6. Step 6: Final answer
    x = 12,325.93

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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.