Home / 30,623.40-42,266.88-18,684.18

Finding the Fourth Proportional to 30,623.40, 42,266.88 and 18,684.18

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Solution

The fourth proportional to 30,623.40, 42,266.88 and 18,684.18 is: 25,788.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,623.40 : 42,266.88 = 18,684.18 : x
  2. Step 2: Convert to fraction form
    30,623.40/42,266.88 = 18,684.18/x
  3. Step 3: Cross multiply
    30,623.40x = 42,266.88 × 18,684.18
  4. Step 4: Simplify right side
    30,623.40x = 789,721,993.96
  5. Step 5: Solve for x
    x = 789,721,993.96/30,623.40
  6. Step 6: Final answer
    x = 25,788.19

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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.