Home / 18,683.48-28,025.64-6,990.32

Finding the Fourth Proportional to 18,683.48, 28,025.64 and 6,990.32

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Solution

The fourth proportional to 18,683.48, 28,025.64 and 6,990.32 is: 10,485.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.48 : 28,025.64 = 6,990.32 : x
  2. Step 2: Convert to fraction form
    18,683.48/28,025.64 = 6,990.32/x
  3. Step 3: Cross multiply
    18,683.48x = 28,025.64 × 6,990.32
  4. Step 4: Simplify right side
    18,683.48x = 195,908,261.87
  5. Step 5: Solve for x
    x = 195,908,261.87/18,683.48
  6. Step 6: Final answer
    x = 10,485.64

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1.5x scale

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.