Home / 12,928.00-17,838.70-7,261.67

Finding the Fourth Proportional to 12,928.00, 17,838.70 and 7,261.67

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Solution

The fourth proportional to 12,928.00, 17,838.70 and 7,261.67 is: 10,020.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.00 : 17,838.70 = 7,261.67 : x
  2. Step 2: Convert to fraction form
    12,928.00/17,838.70 = 7,261.67/x
  3. Step 3: Cross multiply
    12,928.00x = 17,838.70 × 7,261.67
  4. Step 4: Simplify right side
    12,928.00x = 129,538,663.44
  5. Step 5: Solve for x
    x = 129,538,663.44/12,928.00
  6. Step 6: Final answer
    x = 10,020.01

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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.