Home / 21,458.85-29,612.75-12,027.21

Finding the Fourth Proportional to 21,458.85, 29,612.75 and 12,027.21

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Solution

The fourth proportional to 21,458.85, 29,612.75 and 12,027.21 is: 16,597.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458.85 : 29,612.75 = 12,027.21 : x
  2. Step 2: Convert to fraction form
    21,458.85/29,612.75 = 12,027.21/x
  3. Step 3: Cross multiply
    21,458.85x = 29,612.75 × 12,027.21
  4. Step 4: Simplify right side
    21,458.85x = 356,158,762.93
  5. Step 5: Solve for x
    x = 356,158,762.93/21,458.85
  6. Step 6: Final answer
    x = 16,597.29

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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.