Home / 20,668.13-28,471.40-14,986.19

Finding the Fourth Proportional to 20,668.13, 28,471.40 and 14,986.19

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Solution

The fourth proportional to 20,668.13, 28,471.40 and 14,986.19 is: 20,644.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.13 : 28,471.40 = 14,986.19 : x
  2. Step 2: Convert to fraction form
    20,668.13/28,471.40 = 14,986.19/x
  3. Step 3: Cross multiply
    20,668.13x = 28,471.40 × 14,986.19
  4. Step 4: Simplify right side
    20,668.13x = 426,677,667.61
  5. Step 5: Solve for x
    x = 426,677,667.61/20,668.13
  6. Step 6: Final answer
    x = 20,644.23

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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.