Home / 13,258.49-18,300.13-8,219.75

Finding the Fourth Proportional to 13,258.49, 18,300.13 and 8,219.75

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Solution

The fourth proportional to 13,258.49, 18,300.13 and 8,219.75 is: 11,345.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.49 : 18,300.13 = 8,219.75 : x
  2. Step 2: Convert to fraction form
    13,258.49/18,300.13 = 8,219.75/x
  3. Step 3: Cross multiply
    13,258.49x = 18,300.13 × 8,219.75
  4. Step 4: Simplify right side
    13,258.49x = 150,422,381.52
  5. Step 5: Solve for x
    x = 150,422,381.52/13,258.49
  6. Step 6: Final answer
    x = 11,345.37

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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.