Home / 18,815.70-25,966.08-10,858.38

Finding the Fourth Proportional to 18,815.70, 25,966.08 and 10,858.38

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Solution

The fourth proportional to 18,815.70, 25,966.08 and 10,858.38 is: 14,984.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.70 : 25,966.08 = 10,858.38 : x
  2. Step 2: Convert to fraction form
    18,815.70/25,966.08 = 10,858.38/x
  3. Step 3: Cross multiply
    18,815.70x = 25,966.08 × 10,858.38
  4. Step 4: Simplify right side
    18,815.70x = 281,949,563.75
  5. Step 5: Solve for x
    x = 281,949,563.75/18,815.70
  6. Step 6: Final answer
    x = 14,984.80

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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.