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Finding the Fourth Proportional to 13,461, 18,584.88 and 8,752.20

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Solution

The fourth proportional to 13,461, 18,584.88 and 8,752.20 is: 12,083.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461 : 18,584.88 = 8,752.20 : x
  2. Step 2: Convert to fraction form
    13,461/18,584.88 = 8,752.20/x
  3. Step 3: Cross multiply
    13,461x = 18,584.88 × 8,752.20
  4. Step 4: Simplify right side
    13,461x = 162,658,586.74
  5. Step 5: Solve for x
    x = 162,658,586.74/13,461
  6. Step 6: Final answer
    x = 12,083.69

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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.