Home / 20,801.04-31,201.60-10,410.40

Finding the Fourth Proportional to 20,801.04, 31,201.60 and 10,410.40

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Solution

The fourth proportional to 20,801.04, 31,201.60 and 10,410.40 is: 15,615.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.04 : 31,201.60 = 10,410.40 : x
  2. Step 2: Convert to fraction form
    20,801.04/31,201.60 = 10,410.40/x
  3. Step 3: Cross multiply
    20,801.04x = 31,201.60 × 10,410.40
  4. Step 4: Simplify right side
    20,801.04x = 324,821,136.64
  5. Step 5: Solve for x
    x = 324,821,136.64/20,801.04
  6. Step 6: Final answer
    x = 15,615.62

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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.