Home / 18,888.19-28,331.70-4,847.65

Finding the Fourth Proportional to 18,888.19, 28,331.70 and 4,847.65

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Solution

The fourth proportional to 18,888.19, 28,331.70 and 4,847.65 is: 7,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.19 : 28,331.70 = 4,847.65 : x
  2. Step 2: Convert to fraction form
    18,888.19/28,331.70 = 4,847.65/x
  3. Step 3: Cross multiply
    18,888.19x = 28,331.70 × 4,847.65
  4. Step 4: Simplify right side
    18,888.19x = 137,342,023.85
  5. Step 5: Solve for x
    x = 137,342,023.85/18,888.19
  6. Step 6: Final answer
    x = 7,271.32

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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.