Home / 20,387.04-28,108.08-13,204.27

Finding the Fourth Proportional to 20,387.04, 28,108.08 and 13,204.27

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Solution

The fourth proportional to 20,387.04, 28,108.08 and 13,204.27 is: 18,205.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.04 : 28,108.08 = 13,204.27 : x
  2. Step 2: Convert to fraction form
    20,387.04/28,108.08 = 13,204.27/x
  3. Step 3: Cross multiply
    20,387.04x = 28,108.08 × 13,204.27
  4. Step 4: Simplify right side
    20,387.04x = 371,146,677.50
  5. Step 5: Solve for x
    x = 371,146,677.50/20,387.04
  6. Step 6: Final answer
    x = 18,205.03

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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.