Home / 21,977.95-30,324.32-13,023.91

Finding the Fourth Proportional to 21,977.95, 30,324.32 and 13,023.91

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Solution

The fourth proportional to 21,977.95, 30,324.32 and 13,023.91 is: 17,969.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.95 : 30,324.32 = 13,023.91 : x
  2. Step 2: Convert to fraction form
    21,977.95/30,324.32 = 13,023.91/x
  3. Step 3: Cross multiply
    21,977.95x = 30,324.32 × 13,023.91
  4. Step 4: Simplify right side
    21,977.95x = 394,941,073.56
  5. Step 5: Solve for x
    x = 394,941,073.56/21,977.95
  6. Step 6: Final answer
    x = 17,969.88

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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.