Home / 21,051.56-31,575.09-11,180.36

Finding the Fourth Proportional to 21,051.56, 31,575.09 and 11,180.36

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Solution

The fourth proportional to 21,051.56, 31,575.09 and 11,180.36 is: 16,769.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.56 : 31,575.09 = 11,180.36 : x
  2. Step 2: Convert to fraction form
    21,051.56/31,575.09 = 11,180.36/x
  3. Step 3: Cross multiply
    21,051.56x = 31,575.09 × 11,180.36
  4. Step 4: Simplify right side
    21,051.56x = 353,020,873.23
  5. Step 5: Solve for x
    x = 353,020,873.23/21,051.56
  6. Step 6: Final answer
    x = 16,769.35

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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.