Home / 21,004.12-28,985.42-11,444.41

Finding the Fourth Proportional to 21,004.12, 28,985.42 and 11,444.41

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Solution

The fourth proportional to 21,004.12, 28,985.42 and 11,444.41 is: 15,793.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.12 : 28,985.42 = 11,444.41 : x
  2. Step 2: Convert to fraction form
    21,004.12/28,985.42 = 11,444.41/x
  3. Step 3: Cross multiply
    21,004.12x = 28,985.42 × 11,444.41
  4. Step 4: Simplify right side
    21,004.12x = 331,721,144.68
  5. Step 5: Solve for x
    x = 331,721,144.68/21,004.12
  6. Step 6: Final answer
    x = 15,793.15

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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.