Home / 13,148.28-18,146.97-7,770.50

Finding the Fourth Proportional to 13,148.28, 18,146.97 and 7,770.50

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Solution

The fourth proportional to 13,148.28, 18,146.97 and 7,770.50 is: 10,724.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.28 : 18,146.97 = 7,770.50 : x
  2. Step 2: Convert to fraction form
    13,148.28/18,146.97 = 7,770.50/x
  3. Step 3: Cross multiply
    13,148.28x = 18,146.97 × 7,770.50
  4. Step 4: Simplify right side
    13,148.28x = 141,010,939.65
  5. Step 5: Solve for x
    x = 141,010,939.65/13,148.28
  6. Step 6: Final answer
    x = 10,724.67

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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.