Home / 20,359.26-28,095.39-13,272.30

Finding the Fourth Proportional to 20,359.26, 28,095.39 and 13,272.30

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Solution

The fourth proportional to 20,359.26, 28,095.39 and 13,272.30 is: 18,315.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.26 : 28,095.39 = 13,272.30 : x
  2. Step 2: Convert to fraction form
    20,359.26/28,095.39 = 13,272.30/x
  3. Step 3: Cross multiply
    20,359.26x = 28,095.39 × 13,272.30
  4. Step 4: Simplify right side
    20,359.26x = 372,890,444.70
  5. Step 5: Solve for x
    x = 372,890,444.70/20,359.26
  6. Step 6: Final answer
    x = 18,315.52

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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.