Home / 18,115.60-27,173.40-12,866.80

Finding the Fourth Proportional to 18,115.60, 27,173.40 and 12,866.80

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Solution

The fourth proportional to 18,115.60, 27,173.40 and 12,866.80 is: 19,300.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.60 : 27,173.40 = 12,866.80 : x
  2. Step 2: Convert to fraction form
    18,115.60/27,173.40 = 12,866.80/x
  3. Step 3: Cross multiply
    18,115.60x = 27,173.40 × 12,866.80
  4. Step 4: Simplify right side
    18,115.60x = 349,634,703.12
  5. Step 5: Solve for x
    x = 349,634,703.12/18,115.60
  6. Step 6: Final answer
    x = 19,300.20

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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.