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Finding the Fourth Proportional to 14,953.95, 20,636.17 and 8,240.20

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Solution

The fourth proportional to 14,953.95, 20,636.17 and 8,240.20 is: 11,371.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,953.95 : 20,636.17 = 8,240.20 : x
  2. Step 2: Convert to fraction form
    14,953.95/20,636.17 = 8,240.20/x
  3. Step 3: Cross multiply
    14,953.95x = 20,636.17 × 8,240.20
  4. Step 4: Simplify right side
    14,953.95x = 170,046,095.84
  5. Step 5: Solve for x
    x = 170,046,095.84/14,953.95
  6. Step 6: Final answer
    x = 11,371.32

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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.