Home / 21,690.52-29,933.48-12,259.68

Finding the Fourth Proportional to 21,690.52, 29,933.48 and 12,259.68

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Solution

The fourth proportional to 21,690.52, 29,933.48 and 12,259.68 is: 16,918.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690.52 : 29,933.48 = 12,259.68 : x
  2. Step 2: Convert to fraction form
    21,690.52/29,933.48 = 12,259.68/x
  3. Step 3: Cross multiply
    21,690.52x = 29,933.48 × 12,259.68
  4. Step 4: Simplify right side
    21,690.52x = 366,974,886.09
  5. Step 5: Solve for x
    x = 366,974,886.09/21,690.52
  6. Step 6: Final answer
    x = 16,918.68

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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.