Home / 20,350.63-28,084.15-13,272.99

Finding the Fourth Proportional to 20,350.63, 28,084.15 and 13,272.99

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Solution

The fourth proportional to 20,350.63, 28,084.15 and 13,272.99 is: 18,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,350.63 : 28,084.15 = 13,272.99 : x
  2. Step 2: Convert to fraction form
    20,350.63/28,084.15 = 13,272.99/x
  3. Step 3: Cross multiply
    20,350.63x = 28,084.15 × 13,272.99
  4. Step 4: Simplify right side
    20,350.63x = 372,760,642.11
  5. Step 5: Solve for x
    x = 372,760,642.11/20,350.63
  6. Step 6: Final answer
    x = 18,316.91

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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.