Home / 30,670.08-42,322.38-17,239.20

Finding the Fourth Proportional to 30,670.08, 42,322.38 and 17,239.20

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Solution

The fourth proportional to 30,670.08, 42,322.38 and 17,239.20 is: 23,788.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,670.08 : 42,322.38 = 17,239.20 : x
  2. Step 2: Convert to fraction form
    30,670.08/42,322.38 = 17,239.20/x
  3. Step 3: Cross multiply
    30,670.08x = 42,322.38 × 17,239.20
  4. Step 4: Simplify right side
    30,670.08x = 729,603,973.30
  5. Step 5: Solve for x
    x = 729,603,973.30/30,670.08
  6. Step 6: Final answer
    x = 23,788.79

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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.