Home / 30,810.57-46,247.76-18,972.87

Finding the Fourth Proportional to 30,810.57, 46,247.76 and 18,972.87

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Solution

The fourth proportional to 30,810.57, 46,247.76 and 18,972.87 is: 28,478.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.57 : 46,247.76 = 18,972.87 : x
  2. Step 2: Convert to fraction form
    30,810.57/46,247.76 = 18,972.87/x
  3. Step 3: Cross multiply
    30,810.57x = 46,247.76 × 18,972.87
  4. Step 4: Simplify right side
    30,810.57x = 877,452,738.27
  5. Step 5: Solve for x
    x = 877,452,738.27/30,810.57
  6. Step 6: Final answer
    x = 28,478.95

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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.