Home / 30,187.05-45,278.43-7,999.93

Finding the Fourth Proportional to 30,187.05, 45,278.43 and 7,999.93

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Solution

The fourth proportional to 30,187.05, 45,278.43 and 7,999.93 is: 11,999.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,187.05 : 45,278.43 = 7,999.93 : x
  2. Step 2: Convert to fraction form
    30,187.05/45,278.43 = 7,999.93/x
  3. Step 3: Cross multiply
    30,187.05x = 45,278.43 × 7,999.93
  4. Step 4: Simplify right side
    30,187.05x = 362,224,270.51
  5. Step 5: Solve for x
    x = 362,224,270.51/30,187.05
  6. Step 6: Final answer
    x = 11,999.33

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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.