Home / 20,125.68-30,188.56-6,978.08

Finding the Fourth Proportional to 20,125.68, 30,188.56 and 6,978.08

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Solution

The fourth proportional to 20,125.68, 30,188.56 and 6,978.08 is: 10,467.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.68 : 30,188.56 = 6,978.08 : x
  2. Step 2: Convert to fraction form
    20,125.68/30,188.56 = 6,978.08/x
  3. Step 3: Cross multiply
    20,125.68x = 30,188.56 × 6,978.08
  4. Step 4: Simplify right side
    20,125.68x = 210,658,186.76
  5. Step 5: Solve for x
    x = 210,658,186.76/20,125.68
  6. Step 6: Final answer
    x = 10,467.13

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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.