Home / 12,903.36-19,349.37-6,666.90

Finding the Fourth Proportional to 12,903.36, 19,349.37 and 6,666.90

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Solution

The fourth proportional to 12,903.36, 19,349.37 and 6,666.90 is: 9,997.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.36 : 19,349.37 = 6,666.90 : x
  2. Step 2: Convert to fraction form
    12,903.36/19,349.37 = 6,666.90/x
  3. Step 3: Cross multiply
    12,903.36x = 19,349.37 × 6,666.90
  4. Step 4: Simplify right side
    12,903.36x = 129,000,314.85
  5. Step 5: Solve for x
    x = 129,000,314.85/12,903.36
  6. Step 6: Final answer
    x = 9,997.42

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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.