Home / 21,014.04-28,999.19-11,453.93

Finding the Fourth Proportional to 21,014.04, 28,999.19 and 11,453.93

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Solution

The fourth proportional to 21,014.04, 28,999.19 and 11,453.93 is: 15,806.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.04 : 28,999.19 = 11,453.93 : x
  2. Step 2: Convert to fraction form
    21,014.04/28,999.19 = 11,453.93/x
  3. Step 3: Cross multiply
    21,014.04x = 28,999.19 × 11,453.93
  4. Step 4: Simplify right side
    21,014.04x = 332,154,490.05
  5. Step 5: Solve for x
    x = 332,154,490.05/21,014.04
  6. Step 6: Final answer
    x = 15,806.31

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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.