Home / 12,270.08-18,401.28-5,342.72

Finding the Fourth Proportional to 12,270.08, 18,401.28 and 5,342.72

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Solution

The fourth proportional to 12,270.08, 18,401.28 and 5,342.72 is: 8,012.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.08 : 18,401.28 = 5,342.72 : x
  2. Step 2: Convert to fraction form
    12,270.08/18,401.28 = 5,342.72/x
  3. Step 3: Cross multiply
    12,270.08x = 18,401.28 × 5,342.72
  4. Step 4: Simplify right side
    12,270.08x = 98,312,886.68
  5. Step 5: Solve for x
    x = 98,312,886.68/12,270.08
  6. Step 6: Final answer
    x = 8,012.41

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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.