Home / 20,864.59-28,795.16-11,913.41

Finding the Fourth Proportional to 20,864.59, 28,795.16 and 11,913.41

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Solution

The fourth proportional to 20,864.59, 28,795.16 and 11,913.41 is: 16,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.59 : 28,795.16 = 11,913.41 : x
  2. Step 2: Convert to fraction form
    20,864.59/28,795.16 = 11,913.41/x
  3. Step 3: Cross multiply
    20,864.59x = 28,795.16 × 11,913.41
  4. Step 4: Simplify right side
    20,864.59x = 343,048,648.87
  5. Step 5: Solve for x
    x = 343,048,648.87/20,864.59
  6. Step 6: Final answer
    x = 16,441.67

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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.