Home / 20,515.41-28,293.82-14,152.15

Finding the Fourth Proportional to 20,515.41, 28,293.82 and 14,152.15

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Solution

The fourth proportional to 20,515.41, 28,293.82 and 14,152.15 is: 19,517.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.41 : 28,293.82 = 14,152.15 : x
  2. Step 2: Convert to fraction form
    20,515.41/28,293.82 = 14,152.15/x
  3. Step 3: Cross multiply
    20,515.41x = 28,293.82 × 14,152.15
  4. Step 4: Simplify right side
    20,515.41x = 400,418,384.70
  5. Step 5: Solve for x
    x = 400,418,384.70/20,515.41
  6. Step 6: Final answer
    x = 19,517.93

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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.