Home / 19,845.80-27,381.61-12,776.32

Finding the Fourth Proportional to 19,845.80, 27,381.61 and 12,776.32

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Solution

The fourth proportional to 19,845.80, 27,381.61 and 12,776.32 is: 17,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.80 : 27,381.61 = 12,776.32 : x
  2. Step 2: Convert to fraction form
    19,845.80/27,381.61 = 12,776.32/x
  3. Step 3: Cross multiply
    19,845.80x = 27,381.61 × 12,776.32
  4. Step 4: Simplify right side
    19,845.80x = 349,836,211.48
  5. Step 5: Solve for x
    x = 349,836,211.48/19,845.80
  6. Step 6: Final answer
    x = 17,627.72

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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.