Home / 30,963.08-42,728.64-16,815.98

Finding the Fourth Proportional to 30,963.08, 42,728.64 and 16,815.98

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Solution

The fourth proportional to 30,963.08, 42,728.64 and 16,815.98 is: 23,205.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,963.08 : 42,728.64 = 16,815.98 : x
  2. Step 2: Convert to fraction form
    30,963.08/42,728.64 = 16,815.98/x
  3. Step 3: Cross multiply
    30,963.08x = 42,728.64 × 16,815.98
  4. Step 4: Simplify right side
    30,963.08x = 718,523,955.67
  5. Step 5: Solve for x
    x = 718,523,955.67/30,963.08
  6. Step 6: Final answer
    x = 23,205.83

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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.