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Finding the Fourth Proportional to 20,613.99, 30,895.65 and 9,505.26

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Solution

The fourth proportional to 20,613.99, 30,895.65 and 9,505.26 is: 14,246.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.99 : 30,895.65 = 9,505.26 : x
  2. Step 2: Convert to fraction form
    20,613.99/30,895.65 = 9,505.26/x
  3. Step 3: Cross multiply
    20,613.99x = 30,895.65 × 9,505.26
  4. Step 4: Simplify right side
    20,613.99x = 293,671,186.12
  5. Step 5: Solve for x
    x = 293,671,186.12/20,613.99
  6. Step 6: Final answer
    x = 14,246.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.