Home / 30,811.69-42,520.10-16,664.50

Finding the Fourth Proportional to 30,811.69, 42,520.10 and 16,664.50

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Solution

The fourth proportional to 30,811.69, 42,520.10 and 16,664.50 is: 22,996.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,811.69 : 42,520.10 = 16,664.50 : x
  2. Step 2: Convert to fraction form
    30,811.69/42,520.10 = 16,664.50/x
  3. Step 3: Cross multiply
    30,811.69x = 42,520.10 × 16,664.50
  4. Step 4: Simplify right side
    30,811.69x = 708,576,206.45
  5. Step 5: Solve for x
    x = 708,576,206.45/30,811.69
  6. Step 6: Final answer
    x = 22,996.99

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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.