Home / 12,784.40-19,187.40-4,998.80

Finding the Fourth Proportional to 12,784.40, 19,187.40 and 4,998.80

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Solution

The fourth proportional to 12,784.40, 19,187.40 and 4,998.80 is: 7,502.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,784.40 : 19,187.40 = 4,998.80 : x
  2. Step 2: Convert to fraction form
    12,784.40/19,187.40 = 4,998.80/x
  3. Step 3: Cross multiply
    12,784.40x = 19,187.40 × 4,998.80
  4. Step 4: Simplify right side
    12,784.40x = 95,913,975.12
  5. Step 5: Solve for x
    x = 95,913,975.12/12,784.40
  6. Step 6: Final answer
    x = 7,502.42

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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.