Home / 25,220.83-34,828.37-15,805.80

Finding the Fourth Proportional to 25,220.83, 34,828.37 and 15,805.80

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Solution

The fourth proportional to 25,220.83, 34,828.37 and 15,805.80 is: 21,826.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,220.83 : 34,828.37 = 15,805.80 : x
  2. Step 2: Convert to fraction form
    25,220.83/34,828.37 = 15,805.80/x
  3. Step 3: Cross multiply
    25,220.83x = 34,828.37 × 15,805.80
  4. Step 4: Simplify right side
    25,220.83x = 550,490,250.55
  5. Step 5: Solve for x
    x = 550,490,250.55/25,220.83
  6. Step 6: Final answer
    x = 21,826.81

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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.