Home / 12,638.80-18,958.65-4,740.51

Finding the Fourth Proportional to 12,638.80, 18,958.65 and 4,740.51

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Solution

The fourth proportional to 12,638.80, 18,958.65 and 4,740.51 is: 7,110.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.80 : 18,958.65 = 4,740.51 : x
  2. Step 2: Convert to fraction form
    12,638.80/18,958.65 = 4,740.51/x
  3. Step 3: Cross multiply
    12,638.80x = 18,958.65 × 4,740.51
  4. Step 4: Simplify right side
    12,638.80x = 89,873,758.78
  5. Step 5: Solve for x
    x = 89,873,758.78/12,638.80
  6. Step 6: Final answer
    x = 7,110.94

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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.