Home / 20,898.06-31,346.74-8,417.78

Finding the Fourth Proportional to 20,898.06, 31,346.74 and 8,417.78

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Solution

The fourth proportional to 20,898.06, 31,346.74 and 8,417.78 is: 12,626.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.06 : 31,346.74 = 8,417.78 : x
  2. Step 2: Convert to fraction form
    20,898.06/31,346.74 = 8,417.78/x
  3. Step 3: Cross multiply
    20,898.06x = 31,346.74 × 8,417.78
  4. Step 4: Simplify right side
    20,898.06x = 263,869,961.04
  5. Step 5: Solve for x
    x = 263,869,961.04/20,898.06
  6. Step 6: Final answer
    x = 12,626.53

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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.