Home / 30,641.40-45,989.10-18,145.80

Finding the Fourth Proportional to 30,641.40, 45,989.10 and 18,145.80

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Solution

The fourth proportional to 30,641.40, 45,989.10 and 18,145.80 is: 27,234.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,641.40 : 45,989.10 = 18,145.80 : x
  2. Step 2: Convert to fraction form
    30,641.40/45,989.10 = 18,145.80/x
  3. Step 3: Cross multiply
    30,641.40x = 45,989.10 × 18,145.80
  4. Step 4: Simplify right side
    30,641.40x = 834,509,010.78
  5. Step 5: Solve for x
    x = 834,509,010.78/30,641.40
  6. Step 6: Final answer
    x = 27,234.69

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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.