Home / 28,019.84-38,683.20-18,601.28

Finding the Fourth Proportional to 28,019.84, 38,683.20 and 18,601.28

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Solution

The fourth proportional to 28,019.84, 38,683.20 and 18,601.28 is: 25,680.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.84 : 38,683.20 = 18,601.28 : x
  2. Step 2: Convert to fraction form
    28,019.84/38,683.20 = 18,601.28/x
  3. Step 3: Cross multiply
    28,019.84x = 38,683.20 × 18,601.28
  4. Step 4: Simplify right side
    28,019.84x = 719,557,034.50
  5. Step 5: Solve for x
    x = 719,557,034.50/28,019.84
  6. Step 6: Final answer
    x = 25,680.27

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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.