Home / 21,761.90-30,030.85-12,330.46

Finding the Fourth Proportional to 21,761.90, 30,030.85 and 12,330.46

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Solution

The fourth proportional to 21,761.90, 30,030.85 and 12,330.46 is: 17,015.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761.90 : 30,030.85 = 12,330.46 : x
  2. Step 2: Convert to fraction form
    21,761.90/30,030.85 = 12,330.46/x
  3. Step 3: Cross multiply
    21,761.90x = 30,030.85 × 12,330.46
  4. Step 4: Simplify right side
    21,761.90x = 370,294,194.69
  5. Step 5: Solve for x
    x = 370,294,194.69/21,761.90
  6. Step 6: Final answer
    x = 17,015.71

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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.