Home / 21,032.42-28,965.68-20,573.15

Finding the Fourth Proportional to 21,032.42, 28,965.68 and 20,573.15

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Solution

The fourth proportional to 21,032.42, 28,965.68 and 20,573.15 is: 28,333.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,032.42 : 28,965.68 = 20,573.15 : x
  2. Step 2: Convert to fraction form
    21,032.42/28,965.68 = 20,573.15/x
  3. Step 3: Cross multiply
    21,032.42x = 28,965.68 × 20,573.15
  4. Step 4: Simplify right side
    21,032.42x = 595,915,279.49
  5. Step 5: Solve for x
    x = 595,915,279.49/21,032.42
  6. Step 6: Final answer
    x = 28,333.18

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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.