Home / 13,398.37-20,111.07-11,848.57

Finding the Fourth Proportional to 13,398.37, 20,111.07 and 11,848.57

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Solution

The fourth proportional to 13,398.37, 20,111.07 and 11,848.57 is: 17,784.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.37 : 20,111.07 = 11,848.57 : x
  2. Step 2: Convert to fraction form
    13,398.37/20,111.07 = 11,848.57/x
  3. Step 3: Cross multiply
    13,398.37x = 20,111.07 × 11,848.57
  4. Step 4: Simplify right side
    13,398.37x = 238,287,420.67
  5. Step 5: Solve for x
    x = 238,287,420.67/13,398.37
  6. Step 6: Final answer
    x = 17,784.81

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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.