Home / 13,842.43-19,102.77-7,874.15

Finding the Fourth Proportional to 13,842.43, 19,102.77 and 7,874.15

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Solution

The fourth proportional to 13,842.43, 19,102.77 and 7,874.15 is: 10,866.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,842.43 : 19,102.77 = 7,874.15 : x
  2. Step 2: Convert to fraction form
    13,842.43/19,102.77 = 7,874.15/x
  3. Step 3: Cross multiply
    13,842.43x = 19,102.77 × 7,874.15
  4. Step 4: Simplify right side
    13,842.43x = 150,417,980.88
  5. Step 5: Solve for x
    x = 150,417,980.88/13,842.43
  6. Step 6: Final answer
    x = 10,866.45

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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.