Home / 28,089.92-42,140.96-8,370.07

Finding the Fourth Proportional to 28,089.92, 42,140.96 and 8,370.07

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Solution

The fourth proportional to 28,089.92, 42,140.96 and 8,370.07 is: 12,556.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.92 : 42,140.96 = 8,370.07 : x
  2. Step 2: Convert to fraction form
    28,089.92/42,140.96 = 8,370.07/x
  3. Step 3: Cross multiply
    28,089.92x = 42,140.96 × 8,370.07
  4. Step 4: Simplify right side
    28,089.92x = 352,722,669.25
  5. Step 5: Solve for x
    x = 352,722,669.25/28,089.92
  6. Step 6: Final answer
    x = 12,556.91

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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.