Home / 18,113.84-25,038.92-15,112.18

Finding the Fourth Proportional to 18,113.84, 25,038.92 and 15,112.18

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Solution

The fourth proportional to 18,113.84, 25,038.92 and 15,112.18 is: 20,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.84 : 25,038.92 = 15,112.18 : x
  2. Step 2: Convert to fraction form
    18,113.84/25,038.92 = 15,112.18/x
  3. Step 3: Cross multiply
    18,113.84x = 25,038.92 × 15,112.18
  4. Step 4: Simplify right side
    18,113.84x = 378,392,666.05
  5. Step 5: Solve for x
    x = 378,392,666.05/18,113.84
  6. Step 6: Final answer
    x = 20,889.70

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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.