Home / 20,655.13-28,497.34-12,039.34

Finding the Fourth Proportional to 20,655.13, 28,497.34 and 12,039.34

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Solution

The fourth proportional to 20,655.13, 28,497.34 and 12,039.34 is: 16,610.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.13 : 28,497.34 = 12,039.34 : x
  2. Step 2: Convert to fraction form
    20,655.13/28,497.34 = 12,039.34/x
  3. Step 3: Cross multiply
    20,655.13x = 28,497.34 × 12,039.34
  4. Step 4: Simplify right side
    20,655.13x = 343,089,216.49
  5. Step 5: Solve for x
    x = 343,089,216.49/20,655.13
  6. Step 6: Final answer
    x = 16,610.37

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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.