Home / 12,437.36-18,662.36-6,889.60

Finding the Fourth Proportional to 12,437.36, 18,662.36 and 6,889.60

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Solution

The fourth proportional to 12,437.36, 18,662.36 and 6,889.60 is: 10,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,437.36 : 18,662.36 = 6,889.60 : x
  2. Step 2: Convert to fraction form
    12,437.36/18,662.36 = 6,889.60/x
  3. Step 3: Cross multiply
    12,437.36x = 18,662.36 × 6,889.60
  4. Step 4: Simplify right side
    12,437.36x = 128,576,195.46
  5. Step 5: Solve for x
    x = 128,576,195.46/12,437.36
  6. Step 6: Final answer
    x = 10,337.90

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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.