Home / 13,325.21-19,980.47-5,425.71

Finding the Fourth Proportional to 13,325.21, 19,980.47 and 5,425.71

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Solution

The fourth proportional to 13,325.21, 19,980.47 and 5,425.71 is: 8,135.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.21 : 19,980.47 = 5,425.71 : x
  2. Step 2: Convert to fraction form
    13,325.21/19,980.47 = 5,425.71/x
  3. Step 3: Cross multiply
    13,325.21x = 19,980.47 × 5,425.71
  4. Step 4: Simplify right side
    13,325.21x = 108,408,174.52
  5. Step 5: Solve for x
    x = 108,408,174.52/13,325.21
  6. Step 6: Final answer
    x = 8,135.57

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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.