Home / 27,642.64-41,431.50-12,820.35

Finding the Fourth Proportional to 27,642.64, 41,431.50 and 12,820.35

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Solution

The fourth proportional to 27,642.64, 41,431.50 and 12,820.35 is: 19,215.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,642.64 : 41,431.50 = 12,820.35 : x
  2. Step 2: Convert to fraction form
    27,642.64/41,431.50 = 12,820.35/x
  3. Step 3: Cross multiply
    27,642.64x = 41,431.50 × 12,820.35
  4. Step 4: Simplify right side
    27,642.64x = 531,166,331.03
  5. Step 5: Solve for x
    x = 531,166,331.03/27,642.64
  6. Step 6: Final answer
    x = 19,215.47

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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.