Home / 20,958.42-28,922.83-11,398.53

Finding the Fourth Proportional to 20,958.42, 28,922.83 and 11,398.53

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Solution

The fourth proportional to 20,958.42, 28,922.83 and 11,398.53 is: 15,730.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.42 : 28,922.83 = 11,398.53 : x
  2. Step 2: Convert to fraction form
    20,958.42/28,922.83 = 11,398.53/x
  3. Step 3: Cross multiply
    20,958.42x = 28,922.83 × 11,398.53
  4. Step 4: Simplify right side
    20,958.42x = 329,677,666.12
  5. Step 5: Solve for x
    x = 329,677,666.12/20,958.42
  6. Step 6: Final answer
    x = 15,730.08

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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.