Home / 20,347.29-28,079.73-11,394.36

Finding the Fourth Proportional to 20,347.29, 28,079.73 and 11,394.36

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Solution

The fourth proportional to 20,347.29, 28,079.73 and 11,394.36 is: 15,724.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.29 : 28,079.73 = 11,394.36 : x
  2. Step 2: Convert to fraction form
    20,347.29/28,079.73 = 11,394.36/x
  3. Step 3: Cross multiply
    20,347.29x = 28,079.73 × 11,394.36
  4. Step 4: Simplify right side
    20,347.29x = 319,950,552.32
  5. Step 5: Solve for x
    x = 319,950,552.32/20,347.29
  6. Step 6: Final answer
    x = 15,724.48

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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.