Home / 22,161.47-30,582.90-12,090.12

Finding the Fourth Proportional to 22,161.47, 30,582.90 and 12,090.12

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Solution

The fourth proportional to 22,161.47, 30,582.90 and 12,090.12 is: 16,684.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.47 : 30,582.90 = 12,090.12 : x
  2. Step 2: Convert to fraction form
    22,161.47/30,582.90 = 12,090.12/x
  3. Step 3: Cross multiply
    22,161.47x = 30,582.90 × 12,090.12
  4. Step 4: Simplify right side
    22,161.47x = 369,750,999.63
  5. Step 5: Solve for x
    x = 369,750,999.63/22,161.47
  6. Step 6: Final answer
    x = 16,684.41

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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.