Home / 21,960.64-30,303.76-13,006.56

Finding the Fourth Proportional to 21,960.64, 30,303.76 and 13,006.56

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Solution

The fourth proportional to 21,960.64, 30,303.76 and 13,006.56 is: 17,947.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.64 : 30,303.76 = 13,006.56 : x
  2. Step 2: Convert to fraction form
    21,960.64/30,303.76 = 13,006.56/x
  3. Step 3: Cross multiply
    21,960.64x = 30,303.76 × 13,006.56
  4. Step 4: Simplify right side
    21,960.64x = 394,147,672.67
  5. Step 5: Solve for x
    x = 394,147,672.67/21,960.64
  6. Step 6: Final answer
    x = 17,947.91

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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.