Home / 18,129.85-27,205.55-9,809.70

Finding the Fourth Proportional to 18,129.85, 27,205.55 and 9,809.70

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Solution

The fourth proportional to 18,129.85, 27,205.55 and 9,809.70 is: 14,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.85 : 27,205.55 = 9,809.70 : x
  2. Step 2: Convert to fraction form
    18,129.85/27,205.55 = 9,809.70/x
  3. Step 3: Cross multiply
    18,129.85x = 27,205.55 × 9,809.70
  4. Step 4: Simplify right side
    18,129.85x = 266,878,283.84
  5. Step 5: Solve for x
    x = 266,878,283.84/18,129.85
  6. Step 6: Final answer
    x = 14,720.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.