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Finding the Fourth Proportional to 17,618.40, 26,384.40 and 16,840.80

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Solution

The fourth proportional to 17,618.40, 26,384.40 and 16,840.80 is: 25,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,618.40 : 26,384.40 = 16,840.80 : x
  2. Step 2: Convert to fraction form
    17,618.40/26,384.40 = 16,840.80/x
  3. Step 3: Cross multiply
    17,618.40x = 26,384.40 × 16,840.80
  4. Step 4: Simplify right side
    17,618.40x = 444,334,403.52
  5. Step 5: Solve for x
    x = 444,334,403.52/17,618.40
  6. Step 6: Final answer
    x = 25,219.91

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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.