Home / 20,949.03-31,424.30-6,909.40

Finding the Fourth Proportional to 20,949.03, 31,424.30 and 6,909.40

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Solution

The fourth proportional to 20,949.03, 31,424.30 and 6,909.40 is: 10,364.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.03 : 31,424.30 = 6,909.40 : x
  2. Step 2: Convert to fraction form
    20,949.03/31,424.30 = 6,909.40/x
  3. Step 3: Cross multiply
    20,949.03x = 31,424.30 × 6,909.40
  4. Step 4: Simplify right side
    20,949.03x = 217,123,058.42
  5. Step 5: Solve for x
    x = 217,123,058.42/20,949.03
  6. Step 6: Final answer
    x = 10,364.35

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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.