Home / 30,626.40-42,263.52-18,685.44

Finding the Fourth Proportional to 30,626.40, 42,263.52 and 18,685.44

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Solution

The fourth proportional to 30,626.40, 42,263.52 and 18,685.44 is: 25,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,626.40 : 42,263.52 = 18,685.44 : x
  2. Step 2: Convert to fraction form
    30,626.40/42,263.52 = 18,685.44/x
  3. Step 3: Cross multiply
    30,626.40x = 42,263.52 × 18,685.44
  4. Step 4: Simplify right side
    30,626.40x = 789,712,467.15
  5. Step 5: Solve for x
    x = 789,712,467.15/30,626.40
  6. Step 6: Final answer
    x = 25,785.35

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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.