Home / 19,870.44-27,421.62-10,918.50

Finding the Fourth Proportional to 19,870.44, 27,421.62 and 10,918.50

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Solution

The fourth proportional to 19,870.44, 27,421.62 and 10,918.50 is: 15,067.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.44 : 27,421.62 = 10,918.50 : x
  2. Step 2: Convert to fraction form
    19,870.44/27,421.62 = 10,918.50/x
  3. Step 3: Cross multiply
    19,870.44x = 27,421.62 × 10,918.50
  4. Step 4: Simplify right side
    19,870.44x = 299,402,957.97
  5. Step 5: Solve for x
    x = 299,402,957.97/19,870.44
  6. Step 6: Final answer
    x = 15,067.76

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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.