Home / 13,926.51-19,218.78-7,638.75

Finding the Fourth Proportional to 13,926.51, 19,218.78 and 7,638.75

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Solution

The fourth proportional to 13,926.51, 19,218.78 and 7,638.75 is: 10,541.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.51 : 19,218.78 = 7,638.75 : x
  2. Step 2: Convert to fraction form
    13,926.51/19,218.78 = 7,638.75/x
  3. Step 3: Cross multiply
    13,926.51x = 19,218.78 × 7,638.75
  4. Step 4: Simplify right side
    13,926.51x = 146,807,455.73
  5. Step 5: Solve for x
    x = 146,807,455.73/13,926.51
  6. Step 6: Final answer
    x = 10,541.58

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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.