Home / 20,709.91-31,061.76-6,668.08

Finding the Fourth Proportional to 20,709.91, 31,061.76 and 6,668.08

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Solution

The fourth proportional to 20,709.91, 31,061.76 and 6,668.08 is: 10,001.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.91 : 31,061.76 = 6,668.08 : x
  2. Step 2: Convert to fraction form
    20,709.91/31,061.76 = 6,668.08/x
  3. Step 3: Cross multiply
    20,709.91x = 31,061.76 × 6,668.08
  4. Step 4: Simplify right side
    20,709.91x = 207,122,300.62
  5. Step 5: Solve for x
    x = 207,122,300.62/20,709.91
  6. Step 6: Final answer
    x = 10,001.12

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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.