Home / 20,734.72-28,620.16-14,114.56

Finding the Fourth Proportional to 20,734.72, 28,620.16 and 14,114.56

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Solution

The fourth proportional to 20,734.72, 28,620.16 and 14,114.56 is: 19,482.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.72 : 28,620.16 = 14,114.56 : x
  2. Step 2: Convert to fraction form
    20,734.72/28,620.16 = 14,114.56/x
  3. Step 3: Cross multiply
    20,734.72x = 28,620.16 × 14,114.56
  4. Step 4: Simplify right side
    20,734.72x = 403,960,965.53
  5. Step 5: Solve for x
    x = 403,960,965.53/20,734.72
  6. Step 6: Final answer
    x = 19,482.34

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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.