Home / 13,289.27-19,937.34-3,928.91

Finding the Fourth Proportional to 13,289.27, 19,937.34 and 3,928.91

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Solution

The fourth proportional to 13,289.27, 19,937.34 and 3,928.91 is: 5,894.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.27 : 19,937.34 = 3,928.91 : x
  2. Step 2: Convert to fraction form
    13,289.27/19,937.34 = 3,928.91/x
  3. Step 3: Cross multiply
    13,289.27x = 19,937.34 × 3,928.91
  4. Step 4: Simplify right side
    13,289.27x = 78,331,914.81
  5. Step 5: Solve for x
    x = 78,331,914.81/13,289.27
  6. Step 6: Final answer
    x = 5,894.38

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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.