Home / 21,540.49-29,726.04-11,980.51

Finding the Fourth Proportional to 21,540.49, 29,726.04 and 11,980.51

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Solution

The fourth proportional to 21,540.49, 29,726.04 and 11,980.51 is: 16,533.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,540.49 : 29,726.04 = 11,980.51 : x
  2. Step 2: Convert to fraction form
    21,540.49/29,726.04 = 11,980.51/x
  3. Step 3: Cross multiply
    21,540.49x = 29,726.04 × 11,980.51
  4. Step 4: Simplify right side
    21,540.49x = 356,133,119.48
  5. Step 5: Solve for x
    x = 356,133,119.48/21,540.49
  6. Step 6: Final answer
    x = 16,533.19

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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.