Home / 30,765.48-46,128.51-12,991.33

Finding the Fourth Proportional to 30,765.48, 46,128.51 and 12,991.33

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Solution

The fourth proportional to 30,765.48, 46,128.51 and 12,991.33 is: 19,478.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.48 : 46,128.51 = 12,991.33 : x
  2. Step 2: Convert to fraction form
    30,765.48/46,128.51 = 12,991.33/x
  3. Step 3: Cross multiply
    30,765.48x = 46,128.51 × 12,991.33
  4. Step 4: Simplify right side
    30,765.48x = 599,270,400.22
  5. Step 5: Solve for x
    x = 599,270,400.22/30,765.48
  6. Step 6: Final answer
    x = 19,478.66

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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.