Home / 30,018.24-41,428.80-18,838.08

Finding the Fourth Proportional to 30,018.24, 41,428.80 and 18,838.08

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Solution

The fourth proportional to 30,018.24, 41,428.80 and 18,838.08 is: 25,998.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,018.24 : 41,428.80 = 18,838.08 : x
  2. Step 2: Convert to fraction form
    30,018.24/41,428.80 = 18,838.08/x
  3. Step 3: Cross multiply
    30,018.24x = 41,428.80 × 18,838.08
  4. Step 4: Simplify right side
    30,018.24x = 780,439,048.70
  5. Step 5: Solve for x
    x = 780,439,048.70/30,018.24
  6. Step 6: Final answer
    x = 25,998.83

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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.