Home / 30,577.18-45,896.87-21,090.16

Finding the Fourth Proportional to 30,577.18, 45,896.87 and 21,090.16

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Solution

The fourth proportional to 30,577.18, 45,896.87 and 21,090.16 is: 31,656.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,577.18 : 45,896.87 = 21,090.16 : x
  2. Step 2: Convert to fraction form
    30,577.18/45,896.87 = 21,090.16/x
  3. Step 3: Cross multiply
    30,577.18x = 45,896.87 × 21,090.16
  4. Step 4: Simplify right side
    30,577.18x = 967,972,362.52
  5. Step 5: Solve for x
    x = 967,972,362.52/30,577.18
  6. Step 6: Final answer
    x = 31,656.69

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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.