Home / 18,787.82-25,927.48-10,289.78

Finding the Fourth Proportional to 18,787.82, 25,927.48 and 10,289.78

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Solution

The fourth proportional to 18,787.82, 25,927.48 and 10,289.78 is: 14,200.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.82 : 25,927.48 = 10,289.78 : x
  2. Step 2: Convert to fraction form
    18,787.82/25,927.48 = 10,289.78/x
  3. Step 3: Cross multiply
    18,787.82x = 25,927.48 × 10,289.78
  4. Step 4: Simplify right side
    18,787.82x = 266,788,065.15
  5. Step 5: Solve for x
    x = 266,788,065.15/18,787.82
  6. Step 6: Final answer
    x = 14,200.05

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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.