Home / 10,621.45-15,928.80-3,866.19

Finding the Fourth Proportional to 10,621.45, 15,928.80 and 3,866.19

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Solution

The fourth proportional to 10,621.45, 15,928.80 and 3,866.19 is: 5,798.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.45 : 15,928.80 = 3,866.19 : x
  2. Step 2: Convert to fraction form
    10,621.45/15,928.80 = 3,866.19/x
  3. Step 3: Cross multiply
    10,621.45x = 15,928.80 × 3,866.19
  4. Step 4: Simplify right side
    10,621.45x = 61,583,767.27
  5. Step 5: Solve for x
    x = 61,583,767.27/10,621.45
  6. Step 6: Final answer
    x = 5,798.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.