Home / 30,555.91-42,169.11-16,945.52

Finding the Fourth Proportional to 30,555.91, 42,169.11 and 16,945.52

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Solution

The fourth proportional to 30,555.91, 42,169.11 and 16,945.52 is: 23,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,555.91 : 42,169.11 = 16,945.52 : x
  2. Step 2: Convert to fraction form
    30,555.91/42,169.11 = 16,945.52/x
  3. Step 3: Cross multiply
    30,555.91x = 42,169.11 × 16,945.52
  4. Step 4: Simplify right side
    30,555.91x = 714,577,222.50
  5. Step 5: Solve for x
    x = 714,577,222.50/30,555.91
  6. Step 6: Final answer
    x = 23,385.89

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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.