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Finding the Fourth Proportional to 20,295.66, 30,443.65 and 15,395.57

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Solution

The fourth proportional to 20,295.66, 30,443.65 and 15,395.57 is: 23,093.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.66 : 30,443.65 = 15,395.57 : x
  2. Step 2: Convert to fraction form
    20,295.66/30,443.65 = 15,395.57/x
  3. Step 3: Cross multiply
    20,295.66x = 30,443.65 × 15,395.57
  4. Step 4: Simplify right side
    20,295.66x = 468,697,268.09
  5. Step 5: Solve for x
    x = 468,697,268.09/20,295.66
  6. Step 6: Final answer
    x = 23,093.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.