Home / 20,713.83-28,585.43-11,282.40

Finding the Fourth Proportional to 20,713.83, 28,585.43 and 11,282.40

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Solution

The fourth proportional to 20,713.83, 28,585.43 and 11,282.40 is: 15,569.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.83 : 28,585.43 = 11,282.40 : x
  2. Step 2: Convert to fraction form
    20,713.83/28,585.43 = 11,282.40/x
  3. Step 3: Cross multiply
    20,713.83x = 28,585.43 × 11,282.40
  4. Step 4: Simplify right side
    20,713.83x = 322,512,199.02
  5. Step 5: Solve for x
    x = 322,512,199.02/20,713.83
  6. Step 6: Final answer
    x = 15,569.90

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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.