Home / 30,507.03-42,100.58-17,078.20

Finding the Fourth Proportional to 30,507.03, 42,100.58 and 17,078.20

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Solution

The fourth proportional to 30,507.03, 42,100.58 and 17,078.20 is: 23,568.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,507.03 : 42,100.58 = 17,078.20 : x
  2. Step 2: Convert to fraction form
    30,507.03/42,100.58 = 17,078.20/x
  3. Step 3: Cross multiply
    30,507.03x = 42,100.58 × 17,078.20
  4. Step 4: Simplify right side
    30,507.03x = 719,002,125.36
  5. Step 5: Solve for x
    x = 719,002,125.36/30,507.03
  6. Step 6: Final answer
    x = 23,568.41

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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.