Home / 30,145.23-45,208.59-20,845.02

Finding the Fourth Proportional to 30,145.23, 45,208.59 and 20,845.02

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Solution

The fourth proportional to 30,145.23, 45,208.59 and 20,845.02 is: 31,261.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,145.23 : 45,208.59 = 20,845.02 : x
  2. Step 2: Convert to fraction form
    30,145.23/45,208.59 = 20,845.02/x
  3. Step 3: Cross multiply
    30,145.23x = 45,208.59 × 20,845.02
  4. Step 4: Simplify right side
    30,145.23x = 942,373,962.72
  5. Step 5: Solve for x
    x = 942,373,962.72/30,145.23
  6. Step 6: Final answer
    x = 31,261.13

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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.