Home / 20,127.94-30,191.93-6,980.32

Finding the Fourth Proportional to 20,127.94, 30,191.93 and 6,980.32

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Solution

The fourth proportional to 20,127.94, 30,191.93 and 6,980.32 is: 10,470.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.94 : 30,191.93 = 6,980.32 : x
  2. Step 2: Convert to fraction form
    20,127.94/30,191.93 = 6,980.32/x
  3. Step 3: Cross multiply
    20,127.94x = 30,191.93 × 6,980.32
  4. Step 4: Simplify right side
    20,127.94x = 210,749,332.82
  5. Step 5: Solve for x
    x = 210,749,332.82/20,127.94
  6. Step 6: Final answer
    x = 10,470.49

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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.