Home / 18,089.60-27,134.40-12,840.80

Finding the Fourth Proportional to 18,089.60, 27,134.40 and 12,840.80

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Solution

The fourth proportional to 18,089.60, 27,134.40 and 12,840.80 is: 19,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,089.60 : 27,134.40 = 12,840.80 : x
  2. Step 2: Convert to fraction form
    18,089.60/27,134.40 = 12,840.80/x
  3. Step 3: Cross multiply
    18,089.60x = 27,134.40 × 12,840.80
  4. Step 4: Simplify right side
    18,089.60x = 348,427,403.52
  5. Step 5: Solve for x
    x = 348,427,403.52/18,089.60
  6. Step 6: Final answer
    x = 19,261.20

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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.