Home / 22,161.95-30,580.46-12,730.51

Finding the Fourth Proportional to 22,161.95, 30,580.46 and 12,730.51

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Solution

The fourth proportional to 22,161.95, 30,580.46 and 12,730.51 is: 17,566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,161.95 : 30,580.46 = 12,730.51 : x
  2. Step 2: Convert to fraction form
    22,161.95/30,580.46 = 12,730.51/x
  3. Step 3: Cross multiply
    22,161.95x = 30,580.46 × 12,730.51
  4. Step 4: Simplify right side
    22,161.95x = 389,304,711.73
  5. Step 5: Solve for x
    x = 389,304,711.73/22,161.95
  6. Step 6: Final answer
    x = 17,566.36

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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.