Home / 13,809.06-19,058.38-8,145.40

Finding the Fourth Proportional to 13,809.06, 19,058.38 and 8,145.40

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Solution

The fourth proportional to 13,809.06, 19,058.38 and 8,145.40 is: 11,241.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.06 : 19,058.38 = 8,145.40 : x
  2. Step 2: Convert to fraction form
    13,809.06/19,058.38 = 8,145.40/x
  3. Step 3: Cross multiply
    13,809.06x = 19,058.38 × 8,145.40
  4. Step 4: Simplify right side
    13,809.06x = 155,238,128.45
  5. Step 5: Solve for x
    x = 155,238,128.45/13,809.06
  6. Step 6: Final answer
    x = 11,241.76

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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.