Home / 12,606.75-17,398.40-7,018.83

Finding the Fourth Proportional to 12,606.75, 17,398.40 and 7,018.83

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Solution

The fourth proportional to 12,606.75, 17,398.40 and 7,018.83 is: 9,686.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.75 : 17,398.40 = 7,018.83 : x
  2. Step 2: Convert to fraction form
    12,606.75/17,398.40 = 7,018.83/x
  3. Step 3: Cross multiply
    12,606.75x = 17,398.40 × 7,018.83
  4. Step 4: Simplify right side
    12,606.75x = 122,116,376.78
  5. Step 5: Solve for x
    x = 122,116,376.78/12,606.75
  6. Step 6: Final answer
    x = 9,686.59

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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.