Home / 27,870.80-41,806.20-16,811.60

Finding the Fourth Proportional to 27,870.80, 41,806.20 and 16,811.60

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Solution

The fourth proportional to 27,870.80, 41,806.20 and 16,811.60 is: 25,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.80 : 41,806.20 = 16,811.60 : x
  2. Step 2: Convert to fraction form
    27,870.80/41,806.20 = 16,811.60/x
  3. Step 3: Cross multiply
    27,870.80x = 41,806.20 × 16,811.60
  4. Step 4: Simplify right side
    27,870.80x = 702,829,111.92
  5. Step 5: Solve for x
    x = 702,829,111.92/27,870.80
  6. Step 6: Final answer
    x = 25,217.40

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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.