Home / 20,735.76-31,103.63-5,153.39

Finding the Fourth Proportional to 20,735.76, 31,103.63 and 5,153.39

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Solution

The fourth proportional to 20,735.76, 31,103.63 and 5,153.39 is: 7,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.76 : 31,103.63 = 5,153.39 : x
  2. Step 2: Convert to fraction form
    20,735.76/31,103.63 = 5,153.39/x
  3. Step 3: Cross multiply
    20,735.76x = 31,103.63 × 5,153.39
  4. Step 4: Simplify right side
    20,735.76x = 160,289,090.48
  5. Step 5: Solve for x
    x = 160,289,090.48/20,735.76
  6. Step 6: Final answer
    x = 7,730.08

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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.