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Finding the Fourth Proportional to 17,978.77, 26,970.59 and 16,885.27

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Solution

The fourth proportional to 17,978.77, 26,970.59 and 16,885.27 is: 25,330.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,978.77 : 26,970.59 = 16,885.27 : x
  2. Step 2: Convert to fraction form
    17,978.77/26,970.59 = 16,885.27/x
  3. Step 3: Cross multiply
    17,978.77x = 26,970.59 × 16,885.27
  4. Step 4: Simplify right side
    17,978.77x = 455,405,694.21
  5. Step 5: Solve for x
    x = 455,405,694.21/17,978.77
  6. Step 6: Final answer
    x = 25,330.19

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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.