Home / 22,161.56-30,582.64-12,730.20

Finding the Fourth Proportional to 22,161.56, 30,582.64 and 12,730.20

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Solution

The fourth proportional to 22,161.56, 30,582.64 and 12,730.20 is: 17,567.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.56 : 30,582.64 = 12,730.20 : x
  2. Step 2: Convert to fraction form
    22,161.56/30,582.64 = 12,730.20/x
  3. Step 3: Cross multiply
    22,161.56x = 30,582.64 × 12,730.20
  4. Step 4: Simplify right side
    22,161.56x = 389,323,123.73
  5. Step 5: Solve for x
    x = 389,323,123.73/22,161.56
  6. Step 6: Final answer
    x = 17,567.50

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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.