Home / 20,328.98-30,503.05-7,187.54

Finding the Fourth Proportional to 20,328.98, 30,503.05 and 7,187.54

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Solution

The fourth proportional to 20,328.98, 30,503.05 and 7,187.54 is: 10,784.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.98 : 30,503.05 = 7,187.54 : x
  2. Step 2: Convert to fraction form
    20,328.98/30,503.05 = 7,187.54/x
  3. Step 3: Cross multiply
    20,328.98x = 30,503.05 × 7,187.54
  4. Step 4: Simplify right side
    20,328.98x = 219,241,721.51
  5. Step 5: Solve for x
    x = 219,241,721.51/20,328.98
  6. Step 6: Final answer
    x = 10,784.69

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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.