Home / 13,605.21-20,403.94-5,283.45

Finding the Fourth Proportional to 13,605.21, 20,403.94 and 5,283.45

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Solution

The fourth proportional to 13,605.21, 20,403.94 and 5,283.45 is: 7,923.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.21 : 20,403.94 = 5,283.45 : x
  2. Step 2: Convert to fraction form
    13,605.21/20,403.94 = 5,283.45/x
  3. Step 3: Cross multiply
    13,605.21x = 20,403.94 × 5,283.45
  4. Step 4: Simplify right side
    13,605.21x = 107,803,094.77
  5. Step 5: Solve for x
    x = 107,803,094.77/13,605.21
  6. Step 6: Final answer
    x = 7,923.67

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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.