Home / 30,876.73-42,610.67-18,946.65

Finding the Fourth Proportional to 30,876.73, 42,610.67 and 18,946.65

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Solution

The fourth proportional to 30,876.73, 42,610.67 and 18,946.65 is: 26,146.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876.73 : 42,610.67 = 18,946.65 : x
  2. Step 2: Convert to fraction form
    30,876.73/42,610.67 = 18,946.65/x
  3. Step 3: Cross multiply
    30,876.73x = 42,610.67 × 18,946.65
  4. Step 4: Simplify right side
    30,876.73x = 807,329,450.76
  5. Step 5: Solve for x
    x = 807,329,450.76/30,876.73
  6. Step 6: Final answer
    x = 26,146.86

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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.