Home / 12,837.60-19,261.80-6,998.40

Finding the Fourth Proportional to 12,837.60, 19,261.80 and 6,998.40

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Solution

The fourth proportional to 12,837.60, 19,261.80 and 6,998.40 is: 10,500.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,837.60 : 19,261.80 = 6,998.40 : x
  2. Step 2: Convert to fraction form
    12,837.60/19,261.80 = 6,998.40/x
  3. Step 3: Cross multiply
    12,837.60x = 19,261.80 × 6,998.40
  4. Step 4: Simplify right side
    12,837.60x = 134,801,781.12
  5. Step 5: Solve for x
    x = 134,801,781.12/12,837.60
  6. Step 6: Final answer
    x = 10,500.54

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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.