Home / 13,902.06-20,840.58-5,134.80

Finding the Fourth Proportional to 13,902.06, 20,840.58 and 5,134.80

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Solution

The fourth proportional to 13,902.06, 20,840.58 and 5,134.80 is: 7,697.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,902.06 : 20,840.58 = 5,134.80 : x
  2. Step 2: Convert to fraction form
    13,902.06/20,840.58 = 5,134.80/x
  3. Step 3: Cross multiply
    13,902.06x = 20,840.58 × 5,134.80
  4. Step 4: Simplify right side
    13,902.06x = 107,012,210.18
  5. Step 5: Solve for x
    x = 107,012,210.18/13,902.06
  6. Step 6: Final answer
    x = 7,697.58

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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.