Home / 13,950.39-20,925.61-3,420.45

Finding the Fourth Proportional to 13,950.39, 20,925.61 and 3,420.45

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Solution

The fourth proportional to 13,950.39, 20,925.61 and 3,420.45 is: 5,130.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,950.39 : 20,925.61 = 3,420.45 : x
  2. Step 2: Convert to fraction form
    13,950.39/20,925.61 = 3,420.45/x
  3. Step 3: Cross multiply
    13,950.39x = 20,925.61 × 3,420.45
  4. Step 4: Simplify right side
    13,950.39x = 71,575,002.72
  5. Step 5: Solve for x
    x = 71,575,002.72/13,950.39
  6. Step 6: Final answer
    x = 5,130.68

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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.