Home / 21,077.32-29,070.30-14,942.20

Finding the Fourth Proportional to 21,077.32, 29,070.30 and 14,942.20

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Solution

The fourth proportional to 21,077.32, 29,070.30 and 14,942.20 is: 20,608.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.32 : 29,070.30 = 14,942.20 : x
  2. Step 2: Convert to fraction form
    21,077.32/29,070.30 = 14,942.20/x
  3. Step 3: Cross multiply
    21,077.32x = 29,070.30 × 14,942.20
  4. Step 4: Simplify right side
    21,077.32x = 434,374,236.66
  5. Step 5: Solve for x
    x = 434,374,236.66/21,077.32
  6. Step 6: Final answer
    x = 20,608.61

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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.