Home / 18,105.15-24,938.37-12,790.74

Finding the Fourth Proportional to 18,105.15, 24,938.37 and 12,790.74

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Solution

The fourth proportional to 18,105.15, 24,938.37 and 12,790.74 is: 17,618.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.15 : 24,938.37 = 12,790.74 : x
  2. Step 2: Convert to fraction form
    18,105.15/24,938.37 = 12,790.74/x
  3. Step 3: Cross multiply
    18,105.15x = 24,938.37 × 12,790.74
  4. Step 4: Simplify right side
    18,105.15x = 318,980,206.69
  5. Step 5: Solve for x
    x = 318,980,206.69/18,105.15
  6. Step 6: Final answer
    x = 17,618.20

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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.