Home / 13,719.36-18,931.68-7,751.04

Finding the Fourth Proportional to 13,719.36, 18,931.68 and 7,751.04

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Solution

The fourth proportional to 13,719.36, 18,931.68 and 7,751.04 is: 10,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.36 : 18,931.68 = 7,751.04 : x
  2. Step 2: Convert to fraction form
    13,719.36/18,931.68 = 7,751.04/x
  3. Step 3: Cross multiply
    13,719.36x = 18,931.68 × 7,751.04
  4. Step 4: Simplify right side
    13,719.36x = 146,740,208.95
  5. Step 5: Solve for x
    x = 146,740,208.95/13,719.36
  6. Step 6: Final answer
    x = 10,695.85

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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.