Home / 34,109.28-51,197.13-20,987.28

Finding the Fourth Proportional to 34,109.28, 51,197.13 and 20,987.28

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Solution

The fourth proportional to 34,109.28, 51,197.13 and 20,987.28 is: 31,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,109.28 : 51,197.13 = 20,987.28 : x
  2. Step 2: Convert to fraction form
    34,109.28/51,197.13 = 20,987.28/x
  3. Step 3: Cross multiply
    34,109.28x = 51,197.13 × 20,987.28
  4. Step 4: Simplify right side
    34,109.28x = 1,074,488,502.51
  5. Step 5: Solve for x
    x = 1,074,488,502.51/34,109.28
  6. Step 6: Final answer
    x = 31,501.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.