Home / 30,507.05-42,099.75-17,078.33

Finding the Fourth Proportional to 30,507.05, 42,099.75 and 17,078.33

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Solution

The fourth proportional to 30,507.05, 42,099.75 and 17,078.33 is: 23,568.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,507.05 : 42,099.75 = 17,078.33 : x
  2. Step 2: Convert to fraction form
    30,507.05/42,099.75 = 17,078.33/x
  3. Step 3: Cross multiply
    30,507.05x = 42,099.75 × 17,078.33
  4. Step 4: Simplify right side
    30,507.05x = 718,993,423.42
  5. Step 5: Solve for x
    x = 718,993,423.42/30,507.05
  6. Step 6: Final answer
    x = 23,568.11

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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.