Home / 20,967.13-28,934.63-11,535.49

Finding the Fourth Proportional to 20,967.13, 28,934.63 and 11,535.49

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Solution

The fourth proportional to 20,967.13, 28,934.63 and 11,535.49 is: 15,918.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.13 : 28,934.63 = 11,535.49 : x
  2. Step 2: Convert to fraction form
    20,967.13/28,934.63 = 11,535.49/x
  3. Step 3: Cross multiply
    20,967.13x = 28,934.63 × 11,535.49
  4. Step 4: Simplify right side
    20,967.13x = 333,775,135.02
  5. Step 5: Solve for x
    x = 333,775,135.02/20,967.13
  6. Step 6: Final answer
    x = 15,918.97

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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.