Home / 20,986.40-31,468.08-14,414.24

Finding the Fourth Proportional to 20,986.40, 31,468.08 and 14,414.24

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Solution

The fourth proportional to 20,986.40, 31,468.08 and 14,414.24 is: 21,613.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.40 : 31,468.08 = 14,414.24 : x
  2. Step 2: Convert to fraction form
    20,986.40/31,468.08 = 14,414.24/x
  3. Step 3: Cross multiply
    20,986.40x = 31,468.08 × 14,414.24
  4. Step 4: Simplify right side
    20,986.40x = 453,588,457.46
  5. Step 5: Solve for x
    x = 453,588,457.46/20,986.40
  6. Step 6: Final answer
    x = 21,613.45

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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.