Home / 20,350.89-28,085.94-11,398.23

Finding the Fourth Proportional to 20,350.89, 28,085.94 and 11,398.23

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Solution

The fourth proportional to 20,350.89, 28,085.94 and 11,398.23 is: 15,730.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.89 : 28,085.94 = 11,398.23 : x
  2. Step 2: Convert to fraction form
    20,350.89/28,085.94 = 11,398.23/x
  3. Step 3: Cross multiply
    20,350.89x = 28,085.94 × 11,398.23
  4. Step 4: Simplify right side
    20,350.89x = 320,130,003.89
  5. Step 5: Solve for x
    x = 320,130,003.89/20,350.89
  6. Step 6: Final answer
    x = 15,730.52

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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.