Home / 13,999.70-19,319.82-7,712.08

Finding the Fourth Proportional to 13,999.70, 19,319.82 and 7,712.08

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Solution

The fourth proportional to 13,999.70, 19,319.82 and 7,712.08 is: 10,642.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.70 : 19,319.82 = 7,712.08 : x
  2. Step 2: Convert to fraction form
    13,999.70/19,319.82 = 7,712.08/x
  3. Step 3: Cross multiply
    13,999.70x = 19,319.82 × 7,712.08
  4. Step 4: Simplify right side
    13,999.70x = 148,995,920.21
  5. Step 5: Solve for x
    x = 148,995,920.21/13,999.70
  6. Step 6: Final answer
    x = 10,642.79

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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.