Home / 30,577.75-42,180.20-19,243.01

Finding the Fourth Proportional to 30,577.75, 42,180.20 and 19,243.01

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Solution

The fourth proportional to 30,577.75, 42,180.20 and 19,243.01 is: 26,544.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,577.75 : 42,180.20 = 19,243.01 : x
  2. Step 2: Convert to fraction form
    30,577.75/42,180.20 = 19,243.01/x
  3. Step 3: Cross multiply
    30,577.75x = 42,180.20 × 19,243.01
  4. Step 4: Simplify right side
    30,577.75x = 811,674,010.40
  5. Step 5: Solve for x
    x = 811,674,010.40/30,577.75
  6. Step 6: Final answer
    x = 26,544.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.