Home / 30,965.23-42,731.99-16,818.09

Finding the Fourth Proportional to 30,965.23, 42,731.99 and 16,818.09

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Solution

The fourth proportional to 30,965.23, 42,731.99 and 16,818.09 is: 23,208.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.23 : 42,731.99 = 16,818.09 : x
  2. Step 2: Convert to fraction form
    30,965.23/42,731.99 = 16,818.09/x
  3. Step 3: Cross multiply
    30,965.23x = 42,731.99 × 16,818.09
  4. Step 4: Simplify right side
    30,965.23x = 718,670,155.95
  5. Step 5: Solve for x
    x = 718,670,155.95/30,965.23
  6. Step 6: Final answer
    x = 23,208.94

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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.