Home / 21,585.39-29,788.40-12,154.29

Finding the Fourth Proportional to 21,585.39, 29,788.40 and 12,154.29

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Solution

The fourth proportional to 21,585.39, 29,788.40 and 12,154.29 is: 16,773.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.39 : 29,788.40 = 12,154.29 : x
  2. Step 2: Convert to fraction form
    21,585.39/29,788.40 = 12,154.29/x
  3. Step 3: Cross multiply
    21,585.39x = 29,788.40 × 12,154.29
  4. Step 4: Simplify right side
    21,585.39x = 362,056,791.46
  5. Step 5: Solve for x
    x = 362,056,791.46/21,585.39
  6. Step 6: Final answer
    x = 16,773.23

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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.