Home / 20,922.30-31,383.45-20,703.60

Finding the Fourth Proportional to 20,922.30, 31,383.45 and 20,703.60

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Solution

The fourth proportional to 20,922.30, 31,383.45 and 20,703.60 is: 31,055.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.30 : 31,383.45 = 20,703.60 : x
  2. Step 2: Convert to fraction form
    20,922.30/31,383.45 = 20,703.60/x
  3. Step 3: Cross multiply
    20,922.30x = 31,383.45 × 20,703.60
  4. Step 4: Simplify right side
    20,922.30x = 649,750,395.42
  5. Step 5: Solve for x
    x = 649,750,395.42/20,922.30
  6. Step 6: Final answer
    x = 31,055.40

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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.