Home / 21,268.60-29,353.74-12,774.52

Finding the Fourth Proportional to 21,268.60, 29,353.74 and 12,774.52

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Solution

The fourth proportional to 21,268.60, 29,353.74 and 12,774.52 is: 17,630.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.60 : 29,353.74 = 12,774.52 : x
  2. Step 2: Convert to fraction form
    21,268.60/29,353.74 = 12,774.52/x
  3. Step 3: Cross multiply
    21,268.60x = 29,353.74 × 12,774.52
  4. Step 4: Simplify right side
    21,268.60x = 374,979,938.70
  5. Step 5: Solve for x
    x = 374,979,938.70/21,268.60
  6. Step 6: Final answer
    x = 17,630.68

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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.