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Finding the Fourth Proportional to 14,959.79, 20,640.88 and 8,497.99

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Solution

The fourth proportional to 14,959.79, 20,640.88 and 8,497.99 is: 11,725.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,959.79 : 20,640.88 = 8,497.99 : x
  2. Step 2: Convert to fraction form
    14,959.79/20,640.88 = 8,497.99/x
  3. Step 3: Cross multiply
    14,959.79x = 20,640.88 × 8,497.99
  4. Step 4: Simplify right side
    14,959.79x = 175,405,918.98
  5. Step 5: Solve for x
    x = 175,405,918.98/14,959.79
  6. Step 6: Final answer
    x = 11,725.16

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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.