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Finding the Fourth Proportional to 18,005.60, 26,959.80 and 18,005.60

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Solution

The fourth proportional to 18,005.60, 26,959.80 and 18,005.60 is: 26,959.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,005.60 : 26,959.80 = 18,005.60 : x
  2. Step 2: Convert to fraction form
    18,005.60/26,959.80 = 18,005.60/x
  3. Step 3: Cross multiply
    18,005.60x = 26,959.80 × 18,005.60
  4. Step 4: Simplify right side
    18,005.60x = 485,427,374.88
  5. Step 5: Solve for x
    x = 485,427,374.88/18,005.60
  6. Step 6: Final answer
    x = 26,959.80

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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.