Home / 20,998.04-28,977.89-12,047.13

Finding the Fourth Proportional to 20,998.04, 28,977.89 and 12,047.13

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Solution

The fourth proportional to 20,998.04, 28,977.89 and 12,047.13 is: 16,625.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.04 : 28,977.89 = 12,047.13 : x
  2. Step 2: Convert to fraction form
    20,998.04/28,977.89 = 12,047.13/x
  3. Step 3: Cross multiply
    20,998.04x = 28,977.89 × 12,047.13
  4. Step 4: Simplify right side
    20,998.04x = 349,100,347.72
  5. Step 5: Solve for x
    x = 349,100,347.72/20,998.04
  6. Step 6: Final answer
    x = 16,625.38

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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.