Home / 21,752.66-30,017.62-12,191.38

Finding the Fourth Proportional to 21,752.66, 30,017.62 and 12,191.38

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Solution

The fourth proportional to 21,752.66, 30,017.62 and 12,191.38 is: 16,823.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752.66 : 30,017.62 = 12,191.38 : x
  2. Step 2: Convert to fraction form
    21,752.66/30,017.62 = 12,191.38/x
  3. Step 3: Cross multiply
    21,752.66x = 30,017.62 × 12,191.38
  4. Step 4: Simplify right side
    21,752.66x = 365,956,212.12
  5. Step 5: Solve for x
    x = 365,956,212.12/21,752.66
  6. Step 6: Final answer
    x = 16,823.52

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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.