Home / 28,260.10-42,396.90-8,538.85

Finding the Fourth Proportional to 28,260.10, 42,396.90 and 8,538.85

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Solution

The fourth proportional to 28,260.10, 42,396.90 and 8,538.85 is: 12,810.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,260.10 : 42,396.90 = 8,538.85 : x
  2. Step 2: Convert to fraction form
    28,260.10/42,396.90 = 8,538.85/x
  3. Step 3: Cross multiply
    28,260.10x = 42,396.90 × 8,538.85
  4. Step 4: Simplify right side
    28,260.10x = 362,020,769.57
  5. Step 5: Solve for x
    x = 362,020,769.57/28,260.10
  6. Step 6: Final answer
    x = 12,810.31

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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.