Home / 30,930.63-42,684.35-16,783.48

Finding the Fourth Proportional to 30,930.63, 42,684.35 and 16,783.48

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Solution

The fourth proportional to 30,930.63, 42,684.35 and 16,783.48 is: 23,161.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,930.63 : 42,684.35 = 16,783.48 : x
  2. Step 2: Convert to fraction form
    30,930.63/42,684.35 = 16,783.48/x
  3. Step 3: Cross multiply
    30,930.63x = 42,684.35 × 16,783.48
  4. Step 4: Simplify right side
    30,930.63x = 716,391,934.54
  5. Step 5: Solve for x
    x = 716,391,934.54/30,930.63
  6. Step 6: Final answer
    x = 23,161.25

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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.