Home / 20,741.40-31,099.58-8,263.35

Finding the Fourth Proportional to 20,741.40, 31,099.58 and 8,263.35

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Solution

The fourth proportional to 20,741.40, 31,099.58 and 8,263.35 is: 12,390.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.40 : 31,099.58 = 8,263.35 : x
  2. Step 2: Convert to fraction form
    20,741.40/31,099.58 = 8,263.35/x
  3. Step 3: Cross multiply
    20,741.40x = 31,099.58 × 8,263.35
  4. Step 4: Simplify right side
    20,741.40x = 256,986,579.55
  5. Step 5: Solve for x
    x = 256,986,579.55/20,741.40
  6. Step 6: Final answer
    x = 12,390.03

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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.