Home / 30,627.40-42,272.40-18,688.18

Finding the Fourth Proportional to 30,627.40, 42,272.40 and 18,688.18

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Solution

The fourth proportional to 30,627.40, 42,272.40 and 18,688.18 is: 25,793.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,627.40 : 42,272.40 = 18,688.18 : x
  2. Step 2: Convert to fraction form
    30,627.40/42,272.40 = 18,688.18/x
  3. Step 3: Cross multiply
    30,627.40x = 42,272.40 × 18,688.18
  4. Step 4: Simplify right side
    30,627.40x = 789,994,220.23
  5. Step 5: Solve for x
    x = 789,994,220.23/30,627.40
  6. Step 6: Final answer
    x = 25,793.71

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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.