Home / 20,999.25-31,499.28-10,476.54

Finding the Fourth Proportional to 20,999.25, 31,499.28 and 10,476.54

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Solution

The fourth proportional to 20,999.25, 31,499.28 and 10,476.54 is: 15,715.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,999.25 : 31,499.28 = 10,476.54 : x
  2. Step 2: Convert to fraction form
    20,999.25/31,499.28 = 10,476.54/x
  3. Step 3: Cross multiply
    20,999.25x = 31,499.28 × 10,476.54
  4. Step 4: Simplify right side
    20,999.25x = 330,003,466.89
  5. Step 5: Solve for x
    x = 330,003,466.89/20,999.25
  6. Step 6: Final answer
    x = 15,715.01

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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.