Home / 19,235.48-28,867.86-12,980.66

Finding the Fourth Proportional to 19,235.48, 28,867.86 and 12,980.66

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Solution

The fourth proportional to 19,235.48, 28,867.86 and 12,980.66 is: 19,480.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,235.48 : 28,867.86 = 12,980.66 : x
  2. Step 2: Convert to fraction form
    19,235.48/28,867.86 = 12,980.66/x
  3. Step 3: Cross multiply
    19,235.48x = 28,867.86 × 12,980.66
  4. Step 4: Simplify right side
    19,235.48x = 374,723,731.25
  5. Step 5: Solve for x
    x = 374,723,731.25/19,235.48
  6. Step 6: Final answer
    x = 19,480.87

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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.