Home / 12,312.58-18,467.33-3,428.58

Finding the Fourth Proportional to 12,312.58, 18,467.33 and 3,428.58

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Solution

The fourth proportional to 12,312.58, 18,467.33 and 3,428.58 is: 5,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312.58 : 18,467.33 = 3,428.58 : x
  2. Step 2: Convert to fraction form
    12,312.58/18,467.33 = 3,428.58/x
  3. Step 3: Cross multiply
    12,312.58x = 18,467.33 × 3,428.58
  4. Step 4: Simplify right side
    12,312.58x = 63,316,718.29
  5. Step 5: Solve for x
    x = 63,316,718.29/12,312.58
  6. Step 6: Final answer
    x = 5,142.44

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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.