Home / 13,504.12-18,637.80-7,838.88

Finding the Fourth Proportional to 13,504.12, 18,637.80 and 7,838.88

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Solution

The fourth proportional to 13,504.12, 18,637.80 and 7,838.88 is: 10,818.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,504.12 : 18,637.80 = 7,838.88 : x
  2. Step 2: Convert to fraction form
    13,504.12/18,637.80 = 7,838.88/x
  3. Step 3: Cross multiply
    13,504.12x = 18,637.80 × 7,838.88
  4. Step 4: Simplify right side
    13,504.12x = 146,099,378.38
  5. Step 5: Solve for x
    x = 146,099,378.38/13,504.12
  6. Step 6: Final answer
    x = 10,818.88

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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.