Home / 13,788.86-19,028.36-7,656.35

Finding the Fourth Proportional to 13,788.86, 19,028.36 and 7,656.35

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Solution

The fourth proportional to 13,788.86, 19,028.36 and 7,656.35 is: 10,565.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.86 : 19,028.36 = 7,656.35 : x
  2. Step 2: Convert to fraction form
    13,788.86/19,028.36 = 7,656.35/x
  3. Step 3: Cross multiply
    13,788.86x = 19,028.36 × 7,656.35
  4. Step 4: Simplify right side
    13,788.86x = 145,687,650.66
  5. Step 5: Solve for x
    x = 145,687,650.66/13,788.86
  6. Step 6: Final answer
    x = 10,565.61

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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.