Home / 13,723.36-18,937.60-8,690.24

Finding the Fourth Proportional to 13,723.36, 18,937.60 and 8,690.24

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Solution

The fourth proportional to 13,723.36, 18,937.60 and 8,690.24 is: 11,992.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.36 : 18,937.60 = 8,690.24 : x
  2. Step 2: Convert to fraction form
    13,723.36/18,937.60 = 8,690.24/x
  3. Step 3: Cross multiply
    13,723.36x = 18,937.60 × 8,690.24
  4. Step 4: Simplify right side
    13,723.36x = 164,572,289.02
  5. Step 5: Solve for x
    x = 164,572,289.02/13,723.36
  6. Step 6: Final answer
    x = 11,992.13

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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.