Home / 18,273.36-25,217.10-9,889.80

Finding the Fourth Proportional to 18,273.36, 25,217.10 and 9,889.80

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Solution

The fourth proportional to 18,273.36, 25,217.10 and 9,889.80 is: 13,647.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.36 : 25,217.10 = 9,889.80 : x
  2. Step 2: Convert to fraction form
    18,273.36/25,217.10 = 9,889.80/x
  3. Step 3: Cross multiply
    18,273.36x = 25,217.10 × 9,889.80
  4. Step 4: Simplify right side
    18,273.36x = 249,392,075.58
  5. Step 5: Solve for x
    x = 249,392,075.58/18,273.36
  6. Step 6: Final answer
    x = 13,647.85

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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.