Home / 13,186.93-19,780.47-5,395.74

Finding the Fourth Proportional to 13,186.93, 19,780.47 and 5,395.74

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Solution

The fourth proportional to 13,186.93, 19,780.47 and 5,395.74 is: 8,093.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.93 : 19,780.47 = 5,395.74 : x
  2. Step 2: Convert to fraction form
    13,186.93/19,780.47 = 5,395.74/x
  3. Step 3: Cross multiply
    13,186.93x = 19,780.47 × 5,395.74
  4. Step 4: Simplify right side
    13,186.93x = 106,730,273.20
  5. Step 5: Solve for x
    x = 106,730,273.20/13,186.93
  6. Step 6: Final answer
    x = 8,093.64

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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.