Home / 18,705.10-25,810.74-10,321.60

Finding the Fourth Proportional to 18,705.10, 25,810.74 and 10,321.60

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Solution

The fourth proportional to 18,705.10, 25,810.74 and 10,321.60 is: 14,242.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,705.10 : 25,810.74 = 10,321.60 : x
  2. Step 2: Convert to fraction form
    18,705.10/25,810.74 = 10,321.60/x
  3. Step 3: Cross multiply
    18,705.10x = 25,810.74 × 10,321.60
  4. Step 4: Simplify right side
    18,705.10x = 266,408,133.98
  5. Step 5: Solve for x
    x = 266,408,133.98/18,705.10
  6. Step 6: Final answer
    x = 14,242.54

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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.