Home / 20,125.03-30,187.55-8,278.33

Finding the Fourth Proportional to 20,125.03, 30,187.55 and 8,278.33

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Solution

The fourth proportional to 20,125.03, 30,187.55 and 8,278.33 is: 12,417.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.03 : 30,187.55 = 8,278.33 : x
  2. Step 2: Convert to fraction form
    20,125.03/30,187.55 = 8,278.33/x
  3. Step 3: Cross multiply
    20,125.03x = 30,187.55 × 8,278.33
  4. Step 4: Simplify right side
    20,125.03x = 249,902,382.79
  5. Step 5: Solve for x
    x = 249,902,382.79/20,125.03
  6. Step 6: Final answer
    x = 12,417.49

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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.