Home / 28,280.22-42,420.30-7,220.27

Finding the Fourth Proportional to 28,280.22, 42,420.30 and 7,220.27

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Solution

The fourth proportional to 28,280.22, 42,420.30 and 7,220.27 is: 10,830.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.22 : 42,420.30 = 7,220.27 : x
  2. Step 2: Convert to fraction form
    28,280.22/42,420.30 = 7,220.27/x
  3. Step 3: Cross multiply
    28,280.22x = 42,420.30 × 7,220.27
  4. Step 4: Simplify right side
    28,280.22x = 306,285,807.38
  5. Step 5: Solve for x
    x = 306,285,807.38/28,280.22
  6. Step 6: Final answer
    x = 10,830.39

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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.