Home / 19,878.77-27,434.27-11,383.56

Finding the Fourth Proportional to 19,878.77, 27,434.27 and 11,383.56

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Solution

The fourth proportional to 19,878.77, 27,434.27 and 11,383.56 is: 15,710.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.77 : 27,434.27 = 11,383.56 : x
  2. Step 2: Convert to fraction form
    19,878.77/27,434.27 = 11,383.56/x
  3. Step 3: Cross multiply
    19,878.77x = 27,434.27 × 11,383.56
  4. Step 4: Simplify right side
    19,878.77x = 312,299,687.06
  5. Step 5: Solve for x
    x = 312,299,687.06/19,878.77
  6. Step 6: Final answer
    x = 15,710.21

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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.