Home / 30,913.63-42,660.80-16,766.57

Finding the Fourth Proportional to 30,913.63, 42,660.80 and 16,766.57

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Solution

The fourth proportional to 30,913.63, 42,660.80 and 16,766.57 is: 23,137.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,913.63 : 42,660.80 = 16,766.57 : x
  2. Step 2: Convert to fraction form
    30,913.63/42,660.80 = 16,766.57/x
  3. Step 3: Cross multiply
    30,913.63x = 42,660.80 × 16,766.57
  4. Step 4: Simplify right side
    30,913.63x = 715,275,289.46
  5. Step 5: Solve for x
    x = 715,275,289.46/30,913.63
  6. Step 6: Final answer
    x = 23,137.86

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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.