Home / 20,929.04-31,390.07-6,889.22

Finding the Fourth Proportional to 20,929.04, 31,390.07 and 6,889.22

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Solution

The fourth proportional to 20,929.04, 31,390.07 and 6,889.22 is: 10,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.04 : 31,390.07 = 6,889.22 : x
  2. Step 2: Convert to fraction form
    20,929.04/31,390.07 = 6,889.22/x
  3. Step 3: Cross multiply
    20,929.04x = 31,390.07 × 6,889.22
  4. Step 4: Simplify right side
    20,929.04x = 216,252,906.65
  5. Step 5: Solve for x
    x = 216,252,906.65/20,929.04
  6. Step 6: Final answer
    x = 10,332.67

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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.