Home / 13,889.06-20,835.42-5,130.14

Finding the Fourth Proportional to 13,889.06, 20,835.42 and 5,130.14

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Solution

The fourth proportional to 13,889.06, 20,835.42 and 5,130.14 is: 7,695.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.06 : 20,835.42 = 5,130.14 : x
  2. Step 2: Convert to fraction form
    13,889.06/20,835.42 = 5,130.14/x
  3. Step 3: Cross multiply
    13,889.06x = 20,835.42 × 5,130.14
  4. Step 4: Simplify right side
    13,889.06x = 106,888,621.56
  5. Step 5: Solve for x
    x = 106,888,621.56/13,889.06
  6. Step 6: Final answer
    x = 7,695.89

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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.