Home / 42,138.77-63,202.48-12,551.09

Finding the Fourth Proportional to 42,138.77, 63,202.48 and 12,551.09

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Solution

The fourth proportional to 42,138.77, 63,202.48 and 12,551.09 is: 18,824.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,138.77 : 63,202.48 = 12,551.09 : x
  2. Step 2: Convert to fraction form
    42,138.77/63,202.48 = 12,551.09/x
  3. Step 3: Cross multiply
    42,138.77x = 63,202.48 × 12,551.09
  4. Step 4: Simplify right side
    42,138.77x = 793,259,667.31
  5. Step 5: Solve for x
    x = 793,259,667.31/42,138.77
  6. Step 6: Final answer
    x = 18,824.94

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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.