Home / 21,180.24-29,232.54-12,226.50

Finding the Fourth Proportional to 21,180.24, 29,232.54 and 12,226.50

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Solution

The fourth proportional to 21,180.24, 29,232.54 and 12,226.50 is: 16,874.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.24 : 29,232.54 = 12,226.50 : x
  2. Step 2: Convert to fraction form
    21,180.24/29,232.54 = 12,226.50/x
  3. Step 3: Cross multiply
    21,180.24x = 29,232.54 × 12,226.50
  4. Step 4: Simplify right side
    21,180.24x = 357,411,650.31
  5. Step 5: Solve for x
    x = 357,411,650.31/21,180.24
  6. Step 6: Final answer
    x = 16,874.77

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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.