Home / 30,929.22-42,679.08-18,993.06

Finding the Fourth Proportional to 30,929.22, 42,679.08 and 18,993.06

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Solution

The fourth proportional to 30,929.22, 42,679.08 and 18,993.06 is: 26,208.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,929.22 : 42,679.08 = 18,993.06 : x
  2. Step 2: Convert to fraction form
    30,929.22/42,679.08 = 18,993.06/x
  3. Step 3: Cross multiply
    30,929.22x = 42,679.08 × 18,993.06
  4. Step 4: Simplify right side
    30,929.22x = 810,606,327.18
  5. Step 5: Solve for x
    x = 810,606,327.18/30,929.22
  6. Step 6: Final answer
    x = 26,208.43

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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.