Home / 13,621.90-18,799.08-10,258.78

Finding the Fourth Proportional to 13,621.90, 18,799.08 and 10,258.78

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Solution

The fourth proportional to 13,621.90, 18,799.08 and 10,258.78 is: 14,157.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.90 : 18,799.08 = 10,258.78 : x
  2. Step 2: Convert to fraction form
    13,621.90/18,799.08 = 10,258.78/x
  3. Step 3: Cross multiply
    13,621.90x = 18,799.08 × 10,258.78
  4. Step 4: Simplify right side
    13,621.90x = 192,855,625.92
  5. Step 5: Solve for x
    x = 192,855,625.92/13,621.90
  6. Step 6: Final answer
    x = 14,157.76

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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.