Home / 13,878.42-19,151.82-7,590.66

Finding the Fourth Proportional to 13,878.42, 19,151.82 and 7,590.66

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Solution

The fourth proportional to 13,878.42, 19,151.82 and 7,590.66 is: 10,474.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.42 : 19,151.82 = 7,590.66 : x
  2. Step 2: Convert to fraction form
    13,878.42/19,151.82 = 7,590.66/x
  3. Step 3: Cross multiply
    13,878.42x = 19,151.82 × 7,590.66
  4. Step 4: Simplify right side
    13,878.42x = 145,374,954.00
  5. Step 5: Solve for x
    x = 145,374,954.00/13,878.42
  6. Step 6: Final answer
    x = 10,474.89

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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.