Home / 19,878.60-27,435.06-12,825.54

Finding the Fourth Proportional to 19,878.60, 27,435.06 and 12,825.54

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Solution

The fourth proportional to 19,878.60, 27,435.06 and 12,825.54 is: 17,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.60 : 27,435.06 = 12,825.54 : x
  2. Step 2: Convert to fraction form
    19,878.60/27,435.06 = 12,825.54/x
  3. Step 3: Cross multiply
    19,878.60x = 27,435.06 × 12,825.54
  4. Step 4: Simplify right side
    19,878.60x = 351,869,459.43
  5. Step 5: Solve for x
    x = 351,869,459.43/19,878.60
  6. Step 6: Final answer
    x = 17,700.92

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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.