Home / 15,733.20-21,704.04-13,400.40

Finding the Fourth Proportional to 15,733.20, 21,704.04 and 13,400.40

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Solution

The fourth proportional to 15,733.20, 21,704.04 and 13,400.40 is: 18,485.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,733.20 : 21,704.04 = 13,400.40 : x
  2. Step 2: Convert to fraction form
    15,733.20/21,704.04 = 13,400.40/x
  3. Step 3: Cross multiply
    15,733.20x = 21,704.04 × 13,400.40
  4. Step 4: Simplify right side
    15,733.20x = 290,842,817.62
  5. Step 5: Solve for x
    x = 290,842,817.62/15,733.20
  6. Step 6: Final answer
    x = 18,485.93

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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.