Home / 20,629.20-28,479.96-14,265.12

Finding the Fourth Proportional to 20,629.20, 28,479.96 and 14,265.12

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Solution

The fourth proportional to 20,629.20, 28,479.96 and 14,265.12 is: 19,693.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629.20 : 28,479.96 = 14,265.12 : x
  2. Step 2: Convert to fraction form
    20,629.20/28,479.96 = 14,265.12/x
  3. Step 3: Cross multiply
    20,629.20x = 28,479.96 × 14,265.12
  4. Step 4: Simplify right side
    20,629.20x = 406,270,047.00
  5. Step 5: Solve for x
    x = 406,270,047.00/20,629.20
  6. Step 6: Final answer
    x = 19,693.93

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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.