Home / 28,112.22-38,797.30-15,539.40

Finding the Fourth Proportional to 28,112.22, 38,797.30 and 15,539.40

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Solution

The fourth proportional to 28,112.22, 38,797.30 and 15,539.40 is: 21,445.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,112.22 : 38,797.30 = 15,539.40 : x
  2. Step 2: Convert to fraction form
    28,112.22/38,797.30 = 15,539.40/x
  3. Step 3: Cross multiply
    28,112.22x = 38,797.30 × 15,539.40
  4. Step 4: Simplify right side
    28,112.22x = 602,886,763.62
  5. Step 5: Solve for x
    x = 602,886,763.62/28,112.22
  6. Step 6: Final answer
    x = 21,445.72

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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.