Home / 13,889.76-20,834.78-3,501.51

Finding the Fourth Proportional to 13,889.76, 20,834.78 and 3,501.51

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Solution

The fourth proportional to 13,889.76, 20,834.78 and 3,501.51 is: 5,252.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.76 : 20,834.78 = 3,501.51 : x
  2. Step 2: Convert to fraction form
    13,889.76/20,834.78 = 3,501.51/x
  3. Step 3: Cross multiply
    13,889.76x = 20,834.78 × 3,501.51
  4. Step 4: Simplify right side
    13,889.76x = 72,953,190.52
  5. Step 5: Solve for x
    x = 72,953,190.52/13,889.76
  6. Step 6: Final answer
    x = 5,252.30

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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.