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Finding the Fourth Proportional to 14,916.99, 20,585.94 and 8,203.11

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Solution

The fourth proportional to 14,916.99, 20,585.94 and 8,203.11 is: 11,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,916.99 : 20,585.94 = 8,203.11 : x
  2. Step 2: Convert to fraction form
    14,916.99/20,585.94 = 8,203.11/x
  3. Step 3: Cross multiply
    14,916.99x = 20,585.94 × 8,203.11
  4. Step 4: Simplify right side
    14,916.99x = 168,868,730.27
  5. Step 5: Solve for x
    x = 168,868,730.27/14,916.99
  6. Step 6: Final answer
    x = 11,320.56

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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.