Home / 30,926.59-42,713.46-20,837.36

Finding the Fourth Proportional to 30,926.59, 42,713.46 and 20,837.36

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Solution

The fourth proportional to 30,926.59, 42,713.46 and 20,837.36 is: 28,778.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,926.59 : 42,713.46 = 20,837.36 : x
  2. Step 2: Convert to fraction form
    30,926.59/42,713.46 = 20,837.36/x
  3. Step 3: Cross multiply
    30,926.59x = 42,713.46 × 20,837.36
  4. Step 4: Simplify right side
    30,926.59x = 890,035,742.87
  5. Step 5: Solve for x
    x = 890,035,742.87/30,926.59
  6. Step 6: Final answer
    x = 28,778.99

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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.