Home / 12,428.11-18,642.21-3,068.13

Finding the Fourth Proportional to 12,428.11, 18,642.21 and 3,068.13

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Solution

The fourth proportional to 12,428.11, 18,642.21 and 3,068.13 is: 4,602.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.11 : 18,642.21 = 3,068.13 : x
  2. Step 2: Convert to fraction form
    12,428.11/18,642.21 = 3,068.13/x
  3. Step 3: Cross multiply
    12,428.11x = 18,642.21 × 3,068.13
  4. Step 4: Simplify right side
    12,428.11x = 57,196,786.87
  5. Step 5: Solve for x
    x = 57,196,786.87/12,428.11
  6. Step 6: Final answer
    x = 4,602.21

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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.