Home / 21,988.75-30,345.56-12,052.75

Finding the Fourth Proportional to 21,988.75, 30,345.56 and 12,052.75

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Solution

The fourth proportional to 21,988.75, 30,345.56 and 12,052.75 is: 16,633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,988.75 : 30,345.56 = 12,052.75 : x
  2. Step 2: Convert to fraction form
    21,988.75/30,345.56 = 12,052.75/x
  3. Step 3: Cross multiply
    21,988.75x = 30,345.56 × 12,052.75
  4. Step 4: Simplify right side
    21,988.75x = 365,747,448.29
  5. Step 5: Solve for x
    x = 365,747,448.29/21,988.75
  6. Step 6: Final answer
    x = 16,633.39

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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.