Home / 21,027.60-29,016.75-12,068.79

Finding the Fourth Proportional to 21,027.60, 29,016.75 and 12,068.79

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Solution

The fourth proportional to 21,027.60, 29,016.75 and 12,068.79 is: 16,654.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.60 : 29,016.75 = 12,068.79 : x
  2. Step 2: Convert to fraction form
    21,027.60/29,016.75 = 12,068.79/x
  3. Step 3: Cross multiply
    21,027.60x = 29,016.75 × 12,068.79
  4. Step 4: Simplify right side
    21,027.60x = 350,197,062.23
  5. Step 5: Solve for x
    x = 350,197,062.23/21,027.60
  6. Step 6: Final answer
    x = 16,654.16

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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.