Home / 30,371.76-45,535.77-18,660.78

Finding the Fourth Proportional to 30,371.76, 45,535.77 and 18,660.78

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Solution

The fourth proportional to 30,371.76, 45,535.77 and 18,660.78 is: 27,977.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,371.76 : 45,535.77 = 18,660.78 : x
  2. Step 2: Convert to fraction form
    30,371.76/45,535.77 = 18,660.78/x
  3. Step 3: Cross multiply
    30,371.76x = 45,535.77 × 18,660.78
  4. Step 4: Simplify right side
    30,371.76x = 849,732,986.10
  5. Step 5: Solve for x
    x = 849,732,986.10/30,371.76
  6. Step 6: Final answer
    x = 27,977.73

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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.