Home / 12,651.49-18,977.01-3,886.21

Finding the Fourth Proportional to 12,651.49, 18,977.01 and 3,886.21

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Solution

The fourth proportional to 12,651.49, 18,977.01 and 3,886.21 is: 5,829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.49 : 18,977.01 = 3,886.21 : x
  2. Step 2: Convert to fraction form
    12,651.49/18,977.01 = 3,886.21/x
  3. Step 3: Cross multiply
    12,651.49x = 18,977.01 × 3,886.21
  4. Step 4: Simplify right side
    12,651.49x = 73,748,646.03
  5. Step 5: Solve for x
    x = 73,748,646.03/12,651.49
  6. Step 6: Final answer
    x = 5,829.25

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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.