Home / 20,968.73-28,925.70-15,924.59

Finding the Fourth Proportional to 20,968.73, 28,925.70 and 15,924.59

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Solution

The fourth proportional to 20,968.73, 28,925.70 and 15,924.59 is: 21,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.73 : 28,925.70 = 15,924.59 : x
  2. Step 2: Convert to fraction form
    20,968.73/28,925.70 = 15,924.59/x
  3. Step 3: Cross multiply
    20,968.73x = 28,925.70 × 15,924.59
  4. Step 4: Simplify right side
    20,968.73x = 460,629,912.96
  5. Step 5: Solve for x
    x = 460,629,912.96/20,968.73
  6. Step 6: Final answer
    x = 21,967.47

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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.