Home / 28,020.28-42,036.57-8,300.38

Finding the Fourth Proportional to 28,020.28, 42,036.57 and 8,300.38

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Solution

The fourth proportional to 28,020.28, 42,036.57 and 8,300.38 is: 12,452.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,020.28 : 42,036.57 = 8,300.38 : x
  2. Step 2: Convert to fraction form
    28,020.28/42,036.57 = 8,300.38/x
  3. Step 3: Cross multiply
    28,020.28x = 42,036.57 × 8,300.38
  4. Step 4: Simplify right side
    28,020.28x = 348,919,504.90
  5. Step 5: Solve for x
    x = 348,919,504.90/28,020.28
  6. Step 6: Final answer
    x = 12,452.39

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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.