Home / 42,198.45-63,305.88-12,615.63

Finding the Fourth Proportional to 42,198.45, 63,305.88 and 12,615.63

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Solution

The fourth proportional to 42,198.45, 63,305.88 and 12,615.63 is: 18,925.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,198.45 : 63,305.88 = 12,615.63 : x
  2. Step 2: Convert to fraction form
    42,198.45/63,305.88 = 12,615.63/x
  3. Step 3: Cross multiply
    42,198.45x = 63,305.88 × 12,615.63
  4. Step 4: Simplify right side
    42,198.45x = 798,643,558.90
  5. Step 5: Solve for x
    x = 798,643,558.90/42,198.45
  6. Step 6: Final answer
    x = 18,925.90

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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.