Home / 13,723.08-18,937.77-7,756.68

Finding the Fourth Proportional to 13,723.08, 18,937.77 and 7,756.68

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Solution

The fourth proportional to 13,723.08, 18,937.77 and 7,756.68 is: 10,704.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,723.08 : 18,937.77 = 7,756.68 : x
  2. Step 2: Convert to fraction form
    13,723.08/18,937.77 = 7,756.68/x
  3. Step 3: Cross multiply
    13,723.08x = 18,937.77 × 7,756.68
  4. Step 4: Simplify right side
    13,723.08x = 146,894,221.80
  5. Step 5: Solve for x
    x = 146,894,221.80/13,723.08
  6. Step 6: Final answer
    x = 10,704.17

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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.