Home / 20,347.09-28,075.71-11,394.97

Finding the Fourth Proportional to 20,347.09, 28,075.71 and 11,394.97

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Solution

The fourth proportional to 20,347.09, 28,075.71 and 11,394.97 is: 15,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.09 : 28,075.71 = 11,394.97 : x
  2. Step 2: Convert to fraction form
    20,347.09/28,075.71 = 11,394.97/x
  3. Step 3: Cross multiply
    20,347.09x = 28,075.71 × 11,394.97
  4. Step 4: Simplify right side
    20,347.09x = 319,921,873.18
  5. Step 5: Solve for x
    x = 319,921,873.18/20,347.09
  6. Step 6: Final answer
    x = 15,723.22

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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.