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Finding the Fourth Proportional to 16,486.76, 22,751.23 and 9,411.80

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Solution

The fourth proportional to 16,486.76, 22,751.23 and 9,411.80 is: 12,987.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,486.76 : 22,751.23 = 9,411.80 : x
  2. Step 2: Convert to fraction form
    16,486.76/22,751.23 = 9,411.80/x
  3. Step 3: Cross multiply
    16,486.76x = 22,751.23 × 9,411.80
  4. Step 4: Simplify right side
    16,486.76x = 214,129,889.23
  5. Step 5: Solve for x
    x = 214,129,889.23/16,486.76
  6. Step 6: Final answer
    x = 12,987.99

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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.