Home / 20,970.56-31,453.68-6,930.08

Finding the Fourth Proportional to 20,970.56, 31,453.68 and 6,930.08

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Solution

The fourth proportional to 20,970.56, 31,453.68 and 6,930.08 is: 10,394.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,970.56 : 31,453.68 = 6,930.08 : x
  2. Step 2: Convert to fraction form
    20,970.56/31,453.68 = 6,930.08/x
  3. Step 3: Cross multiply
    20,970.56x = 31,453.68 × 6,930.08
  4. Step 4: Simplify right side
    20,970.56x = 217,976,518.69
  5. Step 5: Solve for x
    x = 217,976,518.69/20,970.56
  6. Step 6: Final answer
    x = 10,394.41

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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.