Home / 12,790.72-17,650.08-9,435.36

Finding the Fourth Proportional to 12,790.72, 17,650.08 and 9,435.36

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Solution

The fourth proportional to 12,790.72, 17,650.08 and 9,435.36 is: 13,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.72 : 17,650.08 = 9,435.36 : x
  2. Step 2: Convert to fraction form
    12,790.72/17,650.08 = 9,435.36/x
  3. Step 3: Cross multiply
    12,790.72x = 17,650.08 × 9,435.36
  4. Step 4: Simplify right side
    12,790.72x = 166,534,858.83
  5. Step 5: Solve for x
    x = 166,534,858.83/12,790.72
  6. Step 6: Final answer
    x = 13,019.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.