Home / 13,371.03-18,454.10-7,628.49

Finding the Fourth Proportional to 13,371.03, 18,454.10 and 7,628.49

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Solution

The fourth proportional to 13,371.03, 18,454.10 and 7,628.49 is: 10,528.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.03 : 18,454.10 = 7,628.49 : x
  2. Step 2: Convert to fraction form
    13,371.03/18,454.10 = 7,628.49/x
  3. Step 3: Cross multiply
    13,371.03x = 18,454.10 × 7,628.49
  4. Step 4: Simplify right side
    13,371.03x = 140,776,879.17
  5. Step 5: Solve for x
    x = 140,776,879.17/13,371.03
  6. Step 6: Final answer
    x = 10,528.50

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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.