Home / 15,862.26-21,890.70-8,788.71

Finding the Fourth Proportional to 15,862.26, 21,890.70 and 8,788.71

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Solution

The fourth proportional to 15,862.26, 21,890.70 and 8,788.71 is: 12,128.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,862.26 : 21,890.70 = 8,788.71 : x
  2. Step 2: Convert to fraction form
    15,862.26/21,890.70 = 8,788.71/x
  3. Step 3: Cross multiply
    15,862.26x = 21,890.70 × 8,788.71
  4. Step 4: Simplify right side
    15,862.26x = 192,391,014.00
  5. Step 5: Solve for x
    x = 192,391,014.00/15,862.26
  6. Step 6: Final answer
    x = 12,128.85

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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.