Home / 13,926.04-19,218.09-7,638.28

Finding the Fourth Proportional to 13,926.04, 19,218.09 and 7,638.28

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Solution

The fourth proportional to 13,926.04, 19,218.09 and 7,638.28 is: 10,540.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.04 : 19,218.09 = 7,638.28 : x
  2. Step 2: Convert to fraction form
    13,926.04/19,218.09 = 7,638.28/x
  3. Step 3: Cross multiply
    13,926.04x = 19,218.09 × 7,638.28
  4. Step 4: Simplify right side
    13,926.04x = 146,793,152.49
  5. Step 5: Solve for x
    x = 146,793,152.49/13,926.04
  6. Step 6: Final answer
    x = 10,540.91

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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.