Home / 19,700.15-27,170.78-12,627.23

Finding the Fourth Proportional to 19,700.15, 27,170.78 and 12,627.23

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Solution

The fourth proportional to 19,700.15, 27,170.78 and 12,627.23 is: 17,415.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,700.15 : 27,170.78 = 12,627.23 : x
  2. Step 2: Convert to fraction form
    19,700.15/27,170.78 = 12,627.23/x
  3. Step 3: Cross multiply
    19,700.15x = 27,170.78 × 12,627.23
  4. Step 4: Simplify right side
    19,700.15x = 343,091,489.35
  5. Step 5: Solve for x
    x = 343,091,489.35/19,700.15
  6. Step 6: Final answer
    x = 17,415.68

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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.