Home / 18,139.89-25,041.51-12,100.19

Finding the Fourth Proportional to 18,139.89, 25,041.51 and 12,100.19

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Solution

The fourth proportional to 18,139.89, 25,041.51 and 12,100.19 is: 16,703.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.89 : 25,041.51 = 12,100.19 : x
  2. Step 2: Convert to fraction form
    18,139.89/25,041.51 = 12,100.19/x
  3. Step 3: Cross multiply
    18,139.89x = 25,041.51 × 12,100.19
  4. Step 4: Simplify right side
    18,139.89x = 303,006,903.68
  5. Step 5: Solve for x
    x = 303,006,903.68/18,139.89
  6. Step 6: Final answer
    x = 16,703.90

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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.