Home / 13,231.50-18,258.84-7,925.28

Finding the Fourth Proportional to 13,231.50, 18,258.84 and 7,925.28

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Solution

The fourth proportional to 13,231.50, 18,258.84 and 7,925.28 is: 10,936.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.50 : 18,258.84 = 7,925.28 : x
  2. Step 2: Convert to fraction form
    13,231.50/18,258.84 = 7,925.28/x
  3. Step 3: Cross multiply
    13,231.50x = 18,258.84 × 7,925.28
  4. Step 4: Simplify right side
    13,231.50x = 144,706,419.48
  5. Step 5: Solve for x
    x = 144,706,419.48/13,231.50
  6. Step 6: Final answer
    x = 10,936.51

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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.