Home / 30,626.04-42,267.85-18,686.84

Finding the Fourth Proportional to 30,626.04, 42,267.85 and 18,686.84

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Solution

The fourth proportional to 30,626.04, 42,267.85 and 18,686.84 is: 25,790.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,626.04 : 42,267.85 = 18,686.84 : x
  2. Step 2: Convert to fraction form
    30,626.04/42,267.85 = 18,686.84/x
  3. Step 3: Cross multiply
    30,626.04x = 42,267.85 × 18,686.84
  4. Step 4: Simplify right side
    30,626.04x = 789,852,609.05
  5. Step 5: Solve for x
    x = 789,852,609.05/30,626.04
  6. Step 6: Final answer
    x = 25,790.23

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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.