Home / 12,237.80-18,343.74-5,311.40

Finding the Fourth Proportional to 12,237.80, 18,343.74 and 5,311.40

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Solution

The fourth proportional to 12,237.80, 18,343.74 and 5,311.40 is: 7,961.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.80 : 18,343.74 = 5,311.40 : x
  2. Step 2: Convert to fraction form
    12,237.80/18,343.74 = 5,311.40/x
  3. Step 3: Cross multiply
    12,237.80x = 18,343.74 × 5,311.40
  4. Step 4: Simplify right side
    12,237.80x = 97,430,940.64
  5. Step 5: Solve for x
    x = 97,430,940.64/12,237.80
  6. Step 6: Final answer
    x = 7,961.48

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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.