Home / 20,946.90-31,424.98-6,911.26

Finding the Fourth Proportional to 20,946.90, 31,424.98 and 6,911.26

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Solution

The fourth proportional to 20,946.90, 31,424.98 and 6,911.26 is: 10,368.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.90 : 31,424.98 = 6,911.26 : x
  2. Step 2: Convert to fraction form
    20,946.90/31,424.98 = 6,911.26/x
  3. Step 3: Cross multiply
    20,946.90x = 31,424.98 × 6,911.26
  4. Step 4: Simplify right side
    20,946.90x = 217,186,207.27
  5. Step 5: Solve for x
    x = 217,186,207.27/20,946.90
  6. Step 6: Final answer
    x = 10,368.42

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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.