Home / 13,586.80-18,750.68-7,618.85

Finding the Fourth Proportional to 13,586.80, 18,750.68 and 7,618.85

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Solution

The fourth proportional to 13,586.80, 18,750.68 and 7,618.85 is: 10,514.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,586.80 : 18,750.68 = 7,618.85 : x
  2. Step 2: Convert to fraction form
    13,586.80/18,750.68 = 7,618.85/x
  3. Step 3: Cross multiply
    13,586.80x = 18,750.68 × 7,618.85
  4. Step 4: Simplify right side
    13,586.80x = 142,858,618.32
  5. Step 5: Solve for x
    x = 142,858,618.32/13,586.80
  6. Step 6: Final answer
    x = 10,514.52

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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.