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Finding the Fourth Proportional to 35,653.44, 53,462.16 and 20,866.80

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Solution

The fourth proportional to 35,653.44, 53,462.16 and 20,866.80 is: 31,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,653.44 : 53,462.16 = 20,866.80 : x
  2. Step 2: Convert to fraction form
    35,653.44/53,462.16 = 20,866.80/x
  3. Step 3: Cross multiply
    35,653.44x = 53,462.16 × 20,866.80
  4. Step 4: Simplify right side
    35,653.44x = 1,115,584,200.29
  5. Step 5: Solve for x
    x = 1,115,584,200.29/35,653.44
  6. Step 6: Final answer
    x = 31,289.67

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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.