Home / 12,428.52-18,642.79-4,531.63

Finding the Fourth Proportional to 12,428.52, 18,642.79 and 4,531.63

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Solution

The fourth proportional to 12,428.52, 18,642.79 and 4,531.63 is: 6,797.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,428.52 : 18,642.79 = 4,531.63 : x
  2. Step 2: Convert to fraction form
    12,428.52/18,642.79 = 4,531.63/x
  3. Step 3: Cross multiply
    12,428.52x = 18,642.79 × 4,531.63
  4. Step 4: Simplify right side
    12,428.52x = 84,482,226.45
  5. Step 5: Solve for x
    x = 84,482,226.45/12,428.52
  6. Step 6: Final answer
    x = 6,797.45

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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.