Home / 21,585.96-29,791.35-12,154.50

Finding the Fourth Proportional to 21,585.96, 29,791.35 and 12,154.50

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Solution

The fourth proportional to 21,585.96, 29,791.35 and 12,154.50 is: 16,774.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.96 : 29,791.35 = 12,154.50 : x
  2. Step 2: Convert to fraction form
    21,585.96/29,791.35 = 12,154.50/x
  3. Step 3: Cross multiply
    21,585.96x = 29,791.35 × 12,154.50
  4. Step 4: Simplify right side
    21,585.96x = 362,098,963.58
  5. Step 5: Solve for x
    x = 362,098,963.58/21,585.96
  6. Step 6: Final answer
    x = 16,774.74

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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.