Home / 21,012.19-28,996.44-11,452.16

Finding the Fourth Proportional to 21,012.19, 28,996.44 and 11,452.16

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Solution

The fourth proportional to 21,012.19, 28,996.44 and 11,452.16 is: 15,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.19 : 28,996.44 = 11,452.16 : x
  2. Step 2: Convert to fraction form
    21,012.19/28,996.44 = 11,452.16/x
  3. Step 3: Cross multiply
    21,012.19x = 28,996.44 × 11,452.16
  4. Step 4: Simplify right side
    21,012.19x = 332,071,870.31
  5. Step 5: Solve for x
    x = 332,071,870.31/21,012.19
  6. Step 6: Final answer
    x = 15,803.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.