Home / 15,138.04-20,910.50-12,628.46

Finding the Fourth Proportional to 15,138.04, 20,910.50 and 12,628.46

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Solution

The fourth proportional to 15,138.04, 20,910.50 and 12,628.46 is: 17,443.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138.04 : 20,910.50 = 12,628.46 : x
  2. Step 2: Convert to fraction form
    15,138.04/20,910.50 = 12,628.46/x
  3. Step 3: Cross multiply
    15,138.04x = 20,910.50 × 12,628.46
  4. Step 4: Simplify right side
    15,138.04x = 264,067,412.83
  5. Step 5: Solve for x
    x = 264,067,412.83/15,138.04
  6. Step 6: Final answer
    x = 17,443.96

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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.