Home / 20,948.96-31,424.60-6,908.42

Finding the Fourth Proportional to 20,948.96, 31,424.60 and 6,908.42

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Solution

The fourth proportional to 20,948.96, 31,424.60 and 6,908.42 is: 10,363.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.96 : 31,424.60 = 6,908.42 : x
  2. Step 2: Convert to fraction form
    20,948.96/31,424.60 = 6,908.42/x
  3. Step 3: Cross multiply
    20,948.96x = 31,424.60 × 6,908.42
  4. Step 4: Simplify right side
    20,948.96x = 217,094,335.13
  5. Step 5: Solve for x
    x = 217,094,335.13/20,948.96
  6. Step 6: Final answer
    x = 10,363.01

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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.