Home / 20,929.41-31,394.36-6,138.62

Finding the Fourth Proportional to 20,929.41, 31,394.36 and 6,138.62

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Solution

The fourth proportional to 20,929.41, 31,394.36 and 6,138.62 is: 9,208.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.41 : 31,394.36 = 6,138.62 : x
  2. Step 2: Convert to fraction form
    20,929.41/31,394.36 = 6,138.62/x
  3. Step 3: Cross multiply
    20,929.41x = 31,394.36 × 6,138.62
  4. Step 4: Simplify right side
    20,929.41x = 192,718,117.00
  5. Step 5: Solve for x
    x = 192,718,117.00/20,929.41
  6. Step 6: Final answer
    x = 9,208.01

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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.