Home / 28,713.96-39,612.24-20,743.56

Finding the Fourth Proportional to 28,713.96, 39,612.24 and 20,743.56

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Solution

The fourth proportional to 28,713.96, 39,612.24 and 20,743.56 is: 28,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,713.96 : 39,612.24 = 20,743.56 : x
  2. Step 2: Convert to fraction form
    28,713.96/39,612.24 = 20,743.56/x
  3. Step 3: Cross multiply
    28,713.96x = 39,612.24 × 20,743.56
  4. Step 4: Simplify right side
    28,713.96x = 821,698,877.17
  5. Step 5: Solve for x
    x = 821,698,877.17/28,713.96
  6. Step 6: Final answer
    x = 28,616.70

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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.