Home / 28,438.39-42,680.82-20,126.48

Finding the Fourth Proportional to 28,438.39, 42,680.82 and 20,126.48

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Solution

The fourth proportional to 28,438.39, 42,680.82 and 20,126.48 is: 30,206.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,438.39 : 42,680.82 = 20,126.48 : x
  2. Step 2: Convert to fraction form
    28,438.39/42,680.82 = 20,126.48/x
  3. Step 3: Cross multiply
    28,438.39x = 42,680.82 × 20,126.48
  4. Step 4: Simplify right side
    28,438.39x = 859,014,532.18
  5. Step 5: Solve for x
    x = 859,014,532.18/28,438.39
  6. Step 6: Final answer
    x = 30,206.16

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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.