Home / 13,987.35-19,302.12-7,699.68

Finding the Fourth Proportional to 13,987.35, 19,302.12 and 7,699.68

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Solution

The fourth proportional to 13,987.35, 19,302.12 and 7,699.68 is: 10,625.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.35 : 19,302.12 = 7,699.68 : x
  2. Step 2: Convert to fraction form
    13,987.35/19,302.12 = 7,699.68/x
  3. Step 3: Cross multiply
    13,987.35x = 19,302.12 × 7,699.68
  4. Step 4: Simplify right side
    13,987.35x = 148,620,147.32
  5. Step 5: Solve for x
    x = 148,620,147.32/13,987.35
  6. Step 6: Final answer
    x = 10,625.33

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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.