Home / 21,943.85-30,282.66-12,386.05

Finding the Fourth Proportional to 21,943.85, 30,282.66 and 12,386.05

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Solution

The fourth proportional to 21,943.85, 30,282.66 and 12,386.05 is: 17,092.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.85 : 30,282.66 = 12,386.05 : x
  2. Step 2: Convert to fraction form
    21,943.85/30,282.66 = 12,386.05/x
  3. Step 3: Cross multiply
    21,943.85x = 30,282.66 × 12,386.05
  4. Step 4: Simplify right side
    21,943.85x = 375,082,465.19
  5. Step 5: Solve for x
    x = 375,082,465.19/21,943.85
  6. Step 6: Final answer
    x = 17,092.83

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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.