Home / 20,208.84-27,874.86-12,642.06

Finding the Fourth Proportional to 20,208.84, 27,874.86 and 12,642.06

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Solution

The fourth proportional to 20,208.84, 27,874.86 and 12,642.06 is: 17,437.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.84 : 27,874.86 = 12,642.06 : x
  2. Step 2: Convert to fraction form
    20,208.84/27,874.86 = 12,642.06/x
  3. Step 3: Cross multiply
    20,208.84x = 27,874.86 × 12,642.06
  4. Step 4: Simplify right side
    20,208.84x = 352,395,652.61
  5. Step 5: Solve for x
    x = 352,395,652.61/20,208.84
  6. Step 6: Final answer
    x = 17,437.70

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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.