Home / 20,470.69-30,642.47-11,087.40

Finding the Fourth Proportional to 20,470.69, 30,642.47 and 11,087.40

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Solution

The fourth proportional to 20,470.69, 30,642.47 and 11,087.40 is: 16,596.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.69 : 30,642.47 = 11,087.40 : x
  2. Step 2: Convert to fraction form
    20,470.69/30,642.47 = 11,087.40/x
  3. Step 3: Cross multiply
    20,470.69x = 30,642.47 × 11,087.40
  4. Step 4: Simplify right side
    20,470.69x = 339,745,266.44
  5. Step 5: Solve for x
    x = 339,745,266.44/20,470.69
  6. Step 6: Final answer
    x = 16,596.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.