Home / 30,270.73-45,366.61-18,867.95

Finding the Fourth Proportional to 30,270.73, 45,366.61 and 18,867.95

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Solution

The fourth proportional to 30,270.73, 45,366.61 and 18,867.95 is: 28,277.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,270.73 : 45,366.61 = 18,867.95 : x
  2. Step 2: Convert to fraction form
    30,270.73/45,366.61 = 18,867.95/x
  3. Step 3: Cross multiply
    30,270.73x = 45,366.61 × 18,867.95
  4. Step 4: Simplify right side
    30,270.73x = 855,974,929.15
  5. Step 5: Solve for x
    x = 855,974,929.15/30,270.73
  6. Step 6: Final answer
    x = 28,277.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.