Home / 12,154.12-18,231.36-4,256.34

Finding the Fourth Proportional to 12,154.12, 18,231.36 and 4,256.34

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Solution

The fourth proportional to 12,154.12, 18,231.36 and 4,256.34 is: 6,384.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,154.12 : 18,231.36 = 4,256.34 : x
  2. Step 2: Convert to fraction form
    12,154.12/18,231.36 = 4,256.34/x
  3. Step 3: Cross multiply
    12,154.12x = 18,231.36 × 4,256.34
  4. Step 4: Simplify right side
    12,154.12x = 77,598,866.82
  5. Step 5: Solve for x
    x = 77,598,866.82/12,154.12
  6. Step 6: Final answer
    x = 6,384.57

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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.