Home / 21,977.18-30,326.55-13,023.17

Finding the Fourth Proportional to 21,977.18, 30,326.55 and 13,023.17

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Solution

The fourth proportional to 21,977.18, 30,326.55 and 13,023.17 is: 17,970.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.18 : 30,326.55 = 13,023.17 : x
  2. Step 2: Convert to fraction form
    21,977.18/30,326.55 = 13,023.17/x
  3. Step 3: Cross multiply
    21,977.18x = 30,326.55 × 13,023.17
  4. Step 4: Simplify right side
    21,977.18x = 394,947,664.53
  5. Step 5: Solve for x
    x = 394,947,664.53/21,977.18
  6. Step 6: Final answer
    x = 17,970.81

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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.