Home / 30,823.12-42,513.01-18,723.54

Finding the Fourth Proportional to 30,823.12, 42,513.01 and 18,723.54

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Solution

The fourth proportional to 30,823.12, 42,513.01 and 18,723.54 is: 25,824.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,823.12 : 42,513.01 = 18,723.54 : x
  2. Step 2: Convert to fraction form
    30,823.12/42,513.01 = 18,723.54/x
  3. Step 3: Cross multiply
    30,823.12x = 42,513.01 × 18,723.54
  4. Step 4: Simplify right side
    30,823.12x = 795,994,043.26
  5. Step 5: Solve for x
    x = 795,994,043.26/30,823.12
  6. Step 6: Final answer
    x = 25,824.58

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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.