Home / 30,825.18-42,538.74-16,678.02

Finding the Fourth Proportional to 30,825.18, 42,538.74 and 16,678.02

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Solution

The fourth proportional to 30,825.18, 42,538.74 and 16,678.02 is: 23,015.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,825.18 : 42,538.74 = 16,678.02 : x
  2. Step 2: Convert to fraction form
    30,825.18/42,538.74 = 16,678.02/x
  3. Step 3: Cross multiply
    30,825.18x = 42,538.74 × 16,678.02
  4. Step 4: Simplify right side
    30,825.18x = 709,462,027.65
  5. Step 5: Solve for x
    x = 709,462,027.65/30,825.18
  6. Step 6: Final answer
    x = 23,015.67

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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.