Home / 22,072.08-30,461.20-12,643.68

Finding the Fourth Proportional to 22,072.08, 30,461.20 and 12,643.68

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Solution

The fourth proportional to 22,072.08, 30,461.20 and 12,643.68 is: 17,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,072.08 : 30,461.20 = 12,643.68 : x
  2. Step 2: Convert to fraction form
    22,072.08/30,461.20 = 12,643.68/x
  3. Step 3: Cross multiply
    22,072.08x = 30,461.20 × 12,643.68
  4. Step 4: Simplify right side
    22,072.08x = 385,141,665.22
  5. Step 5: Solve for x
    x = 385,141,665.22/22,072.08
  6. Step 6: Final answer
    x = 17,449.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.