Home / 13,842.94-19,111.15-9,140.89

Finding the Fourth Proportional to 13,842.94, 19,111.15 and 9,140.89

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Solution

The fourth proportional to 13,842.94, 19,111.15 and 9,140.89 is: 12,619.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.94 : 19,111.15 = 9,140.89 : x
  2. Step 2: Convert to fraction form
    13,842.94/19,111.15 = 9,140.89/x
  3. Step 3: Cross multiply
    13,842.94x = 19,111.15 × 9,140.89
  4. Step 4: Simplify right side
    13,842.94x = 174,692,919.92
  5. Step 5: Solve for x
    x = 174,692,919.92/13,842.94
  6. Step 6: Final answer
    x = 12,619.64

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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.