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Finding the Fourth Proportional to 14,615.93, 21,869.05 and 8,671.05

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Solution

The fourth proportional to 14,615.93, 21,869.05 and 8,671.05 is: 12,974.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.93 : 21,869.05 = 8,671.05 : x
  2. Step 2: Convert to fraction form
    14,615.93/21,869.05 = 8,671.05/x
  3. Step 3: Cross multiply
    14,615.93x = 21,869.05 × 8,671.05
  4. Step 4: Simplify right side
    14,615.93x = 189,627,582.65
  5. Step 5: Solve for x
    x = 189,627,582.65/14,615.93
  6. Step 6: Final answer
    x = 12,974.03

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1.5x scale

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.