Home / 20,646.85-30,814.25-18,653.95

Finding the Fourth Proportional to 20,646.85, 30,814.25 and 18,653.95

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Solution

The fourth proportional to 20,646.85, 30,814.25 and 18,653.95 is: 27,839.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.85 : 30,814.25 = 18,653.95 : x
  2. Step 2: Convert to fraction form
    20,646.85/30,814.25 = 18,653.95/x
  3. Step 3: Cross multiply
    20,646.85x = 30,814.25 × 18,653.95
  4. Step 4: Simplify right side
    20,646.85x = 574,807,478.79
  5. Step 5: Solve for x
    x = 574,807,478.79/20,646.85
  6. Step 6: Final answer
    x = 27,839.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.