Home / 29,179.15-40,218.82-20,670.35

Finding the Fourth Proportional to 29,179.15, 40,218.82 and 20,670.35

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Solution

The fourth proportional to 29,179.15, 40,218.82 and 20,670.35 is: 28,490.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,179.15 : 40,218.82 = 20,670.35 : x
  2. Step 2: Convert to fraction form
    29,179.15/40,218.82 = 20,670.35/x
  3. Step 3: Cross multiply
    29,179.15x = 40,218.82 × 20,670.35
  4. Step 4: Simplify right side
    29,179.15x = 831,337,085.99
  5. Step 5: Solve for x
    x = 831,337,085.99/29,179.15
  6. Step 6: Final answer
    x = 28,490.79

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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.