Home / 13,721.13-18,934.29-7,751.83

Finding the Fourth Proportional to 13,721.13, 18,934.29 and 7,751.83

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Solution

The fourth proportional to 13,721.13, 18,934.29 and 7,751.83 is: 10,697.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.13 : 18,934.29 = 7,751.83 : x
  2. Step 2: Convert to fraction form
    13,721.13/18,934.29 = 7,751.83/x
  3. Step 3: Cross multiply
    13,721.13x = 18,934.29 × 7,751.83
  4. Step 4: Simplify right side
    13,721.13x = 146,775,397.25
  5. Step 5: Solve for x
    x = 146,775,397.25/13,721.13
  6. Step 6: Final answer
    x = 10,697.03

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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.