Home / 20,127.69-30,191.55-6,980.07

Finding the Fourth Proportional to 20,127.69, 30,191.55 and 6,980.07

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Solution

The fourth proportional to 20,127.69, 30,191.55 and 6,980.07 is: 10,470.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.69 : 30,191.55 = 6,980.07 : x
  2. Step 2: Convert to fraction form
    20,127.69/30,191.55 = 6,980.07/x
  3. Step 3: Cross multiply
    20,127.69x = 30,191.55 × 6,980.07
  4. Step 4: Simplify right side
    20,127.69x = 210,739,132.41
  5. Step 5: Solve for x
    x = 210,739,132.41/20,127.69
  6. Step 6: Final answer
    x = 10,470.11

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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.