Home / 18,910.75-28,370.21-5,762.77

Finding the Fourth Proportional to 18,910.75, 28,370.21 and 5,762.77

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Solution

The fourth proportional to 18,910.75, 28,370.21 and 5,762.77 is: 8,645.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.75 : 28,370.21 = 5,762.77 : x
  2. Step 2: Convert to fraction form
    18,910.75/28,370.21 = 5,762.77/x
  3. Step 3: Cross multiply
    18,910.75x = 28,370.21 × 5,762.77
  4. Step 4: Simplify right side
    18,910.75x = 163,490,995.08
  5. Step 5: Solve for x
    x = 163,490,995.08/18,910.75
  6. Step 6: Final answer
    x = 8,645.40

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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.