Home / 28,070.12-38,735.34-15,492.44

Finding the Fourth Proportional to 28,070.12, 38,735.34 and 15,492.44

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Solution

The fourth proportional to 28,070.12, 38,735.34 and 15,492.44 is: 21,378.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.12 : 38,735.34 = 15,492.44 : x
  2. Step 2: Convert to fraction form
    28,070.12/38,735.34 = 15,492.44/x
  3. Step 3: Cross multiply
    28,070.12x = 38,735.34 × 15,492.44
  4. Step 4: Simplify right side
    28,070.12x = 600,104,930.83
  5. Step 5: Solve for x
    x = 600,104,930.83/28,070.12
  6. Step 6: Final answer
    x = 21,378.78

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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.