Home / 20,783.04-31,174.56-10,392.36

Finding the Fourth Proportional to 20,783.04, 31,174.56 and 10,392.36

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Solution

The fourth proportional to 20,783.04, 31,174.56 and 10,392.36 is: 15,588.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.04 : 31,174.56 = 10,392.36 : x
  2. Step 2: Convert to fraction form
    20,783.04/31,174.56 = 10,392.36/x
  3. Step 3: Cross multiply
    20,783.04x = 31,174.56 × 10,392.36
  4. Step 4: Simplify right side
    20,783.04x = 323,977,250.36
  5. Step 5: Solve for x
    x = 323,977,250.36/20,783.04
  6. Step 6: Final answer
    x = 15,588.54

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Similar ratio
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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.