Home / 18,289.85-27,427.88-7,190.46

Finding the Fourth Proportional to 18,289.85, 27,427.88 and 7,190.46

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Solution

The fourth proportional to 18,289.85, 27,427.88 and 7,190.46 is: 10,782.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.85 : 27,427.88 = 7,190.46 : x
  2. Step 2: Convert to fraction form
    18,289.85/27,427.88 = 7,190.46/x
  3. Step 3: Cross multiply
    18,289.85x = 27,427.88 × 7,190.46
  4. Step 4: Simplify right side
    18,289.85x = 197,219,038.07
  5. Step 5: Solve for x
    x = 197,219,038.07/18,289.85
  6. Step 6: Final answer
    x = 10,782.98

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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.