Home / 12,509.19-17,218.83-11,328.21

Finding the Fourth Proportional to 12,509.19, 17,218.83 and 11,328.21

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Solution

The fourth proportional to 12,509.19, 17,218.83 and 11,328.21 is: 15,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509.19 : 17,218.83 = 11,328.21 : x
  2. Step 2: Convert to fraction form
    12,509.19/17,218.83 = 11,328.21/x
  3. Step 3: Cross multiply
    12,509.19x = 17,218.83 × 11,328.21
  4. Step 4: Simplify right side
    12,509.19x = 195,058,522.19
  5. Step 5: Solve for x
    x = 195,058,522.19/12,509.19
  6. Step 6: Final answer
    x = 15,593.22

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Half scale
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Double scale
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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.