Home / 13,536.05-20,298.69-5,211.45

Finding the Fourth Proportional to 13,536.05, 20,298.69 and 5,211.45

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Solution

The fourth proportional to 13,536.05, 20,298.69 and 5,211.45 is: 7,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,536.05 : 20,298.69 = 5,211.45 : x
  2. Step 2: Convert to fraction form
    13,536.05/20,298.69 = 5,211.45/x
  3. Step 3: Cross multiply
    13,536.05x = 20,298.69 × 5,211.45
  4. Step 4: Simplify right side
    13,536.05x = 105,785,608.00
  5. Step 5: Solve for x
    x = 105,785,608.00/13,536.05
  6. Step 6: Final answer
    x = 7,815.10

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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.