Home / 20,792.37-28,683.47-13,619.18

Finding the Fourth Proportional to 20,792.37, 28,683.47 and 13,619.18

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Solution

The fourth proportional to 20,792.37, 28,683.47 and 13,619.18 is: 18,787.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.37 : 28,683.47 = 13,619.18 : x
  2. Step 2: Convert to fraction form
    20,792.37/28,683.47 = 13,619.18/x
  3. Step 3: Cross multiply
    20,792.37x = 28,683.47 × 13,619.18
  4. Step 4: Simplify right side
    20,792.37x = 390,645,289.43
  5. Step 5: Solve for x
    x = 390,645,289.43/20,792.37
  6. Step 6: Final answer
    x = 18,787.92

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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.