Home / 13,860.42-19,130.78-11,618.74

Finding the Fourth Proportional to 13,860.42, 19,130.78 and 11,618.74

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Solution

The fourth proportional to 13,860.42, 19,130.78 and 11,618.74 is: 16,036.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.42 : 19,130.78 = 11,618.74 : x
  2. Step 2: Convert to fraction form
    13,860.42/19,130.78 = 11,618.74/x
  3. Step 3: Cross multiply
    13,860.42x = 19,130.78 × 11,618.74
  4. Step 4: Simplify right side
    13,860.42x = 222,275,611.78
  5. Step 5: Solve for x
    x = 222,275,611.78/13,860.42
  6. Step 6: Final answer
    x = 16,036.72

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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.