Home / 30,677.78-45,969.50-18,172.92

Finding the Fourth Proportional to 30,677.78, 45,969.50 and 18,172.92

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Solution

The fourth proportional to 30,677.78, 45,969.50 and 18,172.92 is: 27,231.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,677.78 : 45,969.50 = 18,172.92 : x
  2. Step 2: Convert to fraction form
    30,677.78/45,969.50 = 18,172.92/x
  3. Step 3: Cross multiply
    30,677.78x = 45,969.50 × 18,172.92
  4. Step 4: Simplify right side
    30,677.78x = 835,400,045.94
  5. Step 5: Solve for x
    x = 835,400,045.94/30,677.78
  6. Step 6: Final answer
    x = 27,231.44

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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.