Home / 21,928.29-30,260.07-13,973.07

Finding the Fourth Proportional to 21,928.29, 30,260.07 and 13,973.07

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Solution

The fourth proportional to 21,928.29, 30,260.07 and 13,973.07 is: 19,282.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,928.29 : 30,260.07 = 13,973.07 : x
  2. Step 2: Convert to fraction form
    21,928.29/30,260.07 = 13,973.07/x
  3. Step 3: Cross multiply
    21,928.29x = 30,260.07 × 13,973.07
  4. Step 4: Simplify right side
    21,928.29x = 422,826,076.31
  5. Step 5: Solve for x
    x = 422,826,076.31/21,928.29
  6. Step 6: Final answer
    x = 19,282.22

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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.