Home / 20,302.87-28,018.02-11,350.39

Finding the Fourth Proportional to 20,302.87, 28,018.02 and 11,350.39

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Solution

The fourth proportional to 20,302.87, 28,018.02 and 11,350.39 is: 15,663.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.87 : 28,018.02 = 11,350.39 : x
  2. Step 2: Convert to fraction form
    20,302.87/28,018.02 = 11,350.39/x
  3. Step 3: Cross multiply
    20,302.87x = 28,018.02 × 11,350.39
  4. Step 4: Simplify right side
    20,302.87x = 318,015,454.03
  5. Step 5: Solve for x
    x = 318,015,454.03/20,302.87
  6. Step 6: Final answer
    x = 15,663.57

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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.