Home / 30,090.51-45,069.18-20,580.25

Finding the Fourth Proportional to 30,090.51, 45,069.18 and 20,580.25

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Solution

The fourth proportional to 30,090.51, 45,069.18 and 20,580.25 is: 30,824.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,090.51 : 45,069.18 = 20,580.25 : x
  2. Step 2: Convert to fraction form
    30,090.51/45,069.18 = 20,580.25/x
  3. Step 3: Cross multiply
    30,090.51x = 45,069.18 × 20,580.25
  4. Step 4: Simplify right side
    30,090.51x = 927,534,879.02
  5. Step 5: Solve for x
    x = 927,534,879.02/30,090.51
  6. Step 6: Final answer
    x = 30,824.83

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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.