Home / 30,951.78-42,712.59-16,804.62

Finding the Fourth Proportional to 30,951.78, 42,712.59 and 16,804.62

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Solution

The fourth proportional to 30,951.78, 42,712.59 and 16,804.62 is: 23,189.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,951.78 : 42,712.59 = 16,804.62 : x
  2. Step 2: Convert to fraction form
    30,951.78/42,712.59 = 16,804.62/x
  3. Step 3: Cross multiply
    30,951.78x = 42,712.59 × 16,804.62
  4. Step 4: Simplify right side
    30,951.78x = 717,768,844.17
  5. Step 5: Solve for x
    x = 717,768,844.17/30,951.78
  6. Step 6: Final answer
    x = 23,189.91

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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.