Home / 20,386.98-28,132.37-11,433.26

Finding the Fourth Proportional to 20,386.98, 28,132.37 and 11,433.26

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Solution

The fourth proportional to 20,386.98, 28,132.37 and 11,433.26 is: 15,776.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386.98 : 28,132.37 = 11,433.26 : x
  2. Step 2: Convert to fraction form
    20,386.98/28,132.37 = 11,433.26/x
  3. Step 3: Cross multiply
    20,386.98x = 28,132.37 × 11,433.26
  4. Step 4: Simplify right side
    20,386.98x = 321,644,700.63
  5. Step 5: Solve for x
    x = 321,644,700.63/20,386.98
  6. Step 6: Final answer
    x = 15,776.97

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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.