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Finding the Fourth Proportional to 17,855.80, 26,783.70 and 14,961.40

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Solution

The fourth proportional to 17,855.80, 26,783.70 and 14,961.40 is: 22,442.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,855.80 : 26,783.70 = 14,961.40 : x
  2. Step 2: Convert to fraction form
    17,855.80/26,783.70 = 14,961.40/x
  3. Step 3: Cross multiply
    17,855.80x = 26,783.70 × 14,961.40
  4. Step 4: Simplify right side
    17,855.80x = 400,721,649.18
  5. Step 5: Solve for x
    x = 400,721,649.18/17,855.80
  6. Step 6: Final answer
    x = 22,442.10

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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.