Home / 42,272.46-63,419.22-12,690.84

Finding the Fourth Proportional to 42,272.46, 63,419.22 and 12,690.84

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Solution

The fourth proportional to 42,272.46, 63,419.22 and 12,690.84 is: 19,039.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,272.46 : 63,419.22 = 12,690.84 : x
  2. Step 2: Convert to fraction form
    42,272.46/63,419.22 = 12,690.84/x
  3. Step 3: Cross multiply
    42,272.46x = 63,419.22 × 12,690.84
  4. Step 4: Simplify right side
    42,272.46x = 804,843,173.94
  5. Step 5: Solve for x
    x = 804,843,173.94/42,272.46
  6. Step 6: Final answer
    x = 19,039.42

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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.