Home / 13,987.41-19,302.63-7,699.78

Finding the Fourth Proportional to 13,987.41, 19,302.63 and 7,699.78

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Solution

The fourth proportional to 13,987.41, 19,302.63 and 7,699.78 is: 10,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.41 : 19,302.63 = 7,699.78 : x
  2. Step 2: Convert to fraction form
    13,987.41/19,302.63 = 7,699.78/x
  3. Step 3: Cross multiply
    13,987.41x = 19,302.63 × 7,699.78
  4. Step 4: Simplify right side
    13,987.41x = 148,625,999.68
  5. Step 5: Solve for x
    x = 148,625,999.68/13,987.41
  6. Step 6: Final answer
    x = 10,625.70

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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.