Home / 13,498.75-18,628.14-7,449.05

Finding the Fourth Proportional to 13,498.75, 18,628.14 and 7,449.05

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Solution

The fourth proportional to 13,498.75, 18,628.14 and 7,449.05 is: 10,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,498.75 : 18,628.14 = 7,449.05 : x
  2. Step 2: Convert to fraction form
    13,498.75/18,628.14 = 7,449.05/x
  3. Step 3: Cross multiply
    13,498.75x = 18,628.14 × 7,449.05
  4. Step 4: Simplify right side
    13,498.75x = 138,761,915.99
  5. Step 5: Solve for x
    x = 138,761,915.99/13,498.75
  6. Step 6: Final answer
    x = 10,279.61

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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.