Home / 27,787.56-38,347.80-15,212.40

Finding the Fourth Proportional to 27,787.56, 38,347.80 and 15,212.40

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Solution

The fourth proportional to 27,787.56, 38,347.80 and 15,212.40 is: 20,993.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.56 : 38,347.80 = 15,212.40 : x
  2. Step 2: Convert to fraction form
    27,787.56/38,347.80 = 15,212.40/x
  3. Step 3: Cross multiply
    27,787.56x = 38,347.80 × 15,212.40
  4. Step 4: Simplify right side
    27,787.56x = 583,362,072.72
  5. Step 5: Solve for x
    x = 583,362,072.72/27,787.56
  6. Step 6: Final answer
    x = 20,993.64

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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.