Home / 10,129.76-15,194.68-3,888.32

Finding the Fourth Proportional to 10,129.76, 15,194.68 and 3,888.32

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Solution

The fourth proportional to 10,129.76, 15,194.68 and 3,888.32 is: 5,832.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.76 : 15,194.68 = 3,888.32 : x
  2. Step 2: Convert to fraction form
    10,129.76/15,194.68 = 3,888.32/x
  3. Step 3: Cross multiply
    10,129.76x = 15,194.68 × 3,888.32
  4. Step 4: Simplify right side
    10,129.76x = 59,081,778.14
  5. Step 5: Solve for x
    x = 59,081,778.14/10,129.76
  6. Step 6: Final answer
    x = 5,832.50

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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.