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Finding the Fourth Proportional to 14,685, 20,256.08 and 8,712.44

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Solution

The fourth proportional to 14,685, 20,256.08 and 8,712.44 is: 12,017.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685 : 20,256.08 = 8,712.44 : x
  2. Step 2: Convert to fraction form
    14,685/20,256.08 = 8,712.44/x
  3. Step 3: Cross multiply
    14,685x = 20,256.08 × 8,712.44
  4. Step 4: Simplify right side
    14,685x = 176,479,881.64
  5. Step 5: Solve for x
    x = 176,479,881.64/14,685
  6. Step 6: Final answer
    x = 12,017.70

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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.