Home / 28,181.94-38,890.79-15,261.15

Finding the Fourth Proportional to 28,181.94, 38,890.79 and 15,261.15

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Solution

The fourth proportional to 28,181.94, 38,890.79 and 15,261.15 is: 21,060.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.94 : 38,890.79 = 15,261.15 : x
  2. Step 2: Convert to fraction form
    28,181.94/38,890.79 = 15,261.15/x
  3. Step 3: Cross multiply
    28,181.94x = 38,890.79 × 15,261.15
  4. Step 4: Simplify right side
    28,181.94x = 593,518,179.81
  5. Step 5: Solve for x
    x = 593,518,179.81/28,181.94
  6. Step 6: Final answer
    x = 21,060.23

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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.