Home / 13,722.91-18,937.60-7,435.28

Finding the Fourth Proportional to 13,722.91, 18,937.60 and 7,435.28

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Solution

The fourth proportional to 13,722.91, 18,937.60 and 7,435.28 is: 10,260.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.91 : 18,937.60 = 7,435.28 : x
  2. Step 2: Convert to fraction form
    13,722.91/18,937.60 = 7,435.28/x
  3. Step 3: Cross multiply
    13,722.91x = 18,937.60 × 7,435.28
  4. Step 4: Simplify right side
    13,722.91x = 140,806,387.28
  5. Step 5: Solve for x
    x = 140,806,387.28/13,722.91
  6. Step 6: Final answer
    x = 10,260.68

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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.