Home / 30,478.63-42,063.68-17,558.35

Finding the Fourth Proportional to 30,478.63, 42,063.68 and 17,558.35

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Solution

The fourth proportional to 30,478.63, 42,063.68 and 17,558.35 is: 24,232.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,478.63 : 42,063.68 = 17,558.35 : x
  2. Step 2: Convert to fraction form
    30,478.63/42,063.68 = 17,558.35/x
  3. Step 3: Cross multiply
    30,478.63x = 42,063.68 × 17,558.35
  4. Step 4: Simplify right side
    30,478.63x = 738,568,815.73
  5. Step 5: Solve for x
    x = 738,568,815.73/30,478.63
  6. Step 6: Final answer
    x = 24,232.35

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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.