Home / 21,077.41-31,616.12-11,712.95

Finding the Fourth Proportional to 21,077.41, 31,616.12 and 11,712.95

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Solution

The fourth proportional to 21,077.41, 31,616.12 and 11,712.95 is: 17,569.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.41 : 31,616.12 = 11,712.95 : x
  2. Step 2: Convert to fraction form
    21,077.41/31,616.12 = 11,712.95/x
  3. Step 3: Cross multiply
    21,077.41x = 31,616.12 × 11,712.95
  4. Step 4: Simplify right side
    21,077.41x = 370,318,032.75
  5. Step 5: Solve for x
    x = 370,318,032.75/21,077.41
  6. Step 6: Final answer
    x = 17,569.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.