Home / 13,717.53-18,929.10-7,749.72

Finding the Fourth Proportional to 13,717.53, 18,929.10 and 7,749.72

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Solution

The fourth proportional to 13,717.53, 18,929.10 and 7,749.72 is: 10,694.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.53 : 18,929.10 = 7,749.72 : x
  2. Step 2: Convert to fraction form
    13,717.53/18,929.10 = 7,749.72/x
  3. Step 3: Cross multiply
    13,717.53x = 18,929.10 × 7,749.72
  4. Step 4: Simplify right side
    13,717.53x = 146,695,224.85
  5. Step 5: Solve for x
    x = 146,695,224.85/13,717.53
  6. Step 6: Final answer
    x = 10,694.00

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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.