Home / 21,367.18-29,477.12-12,409.83

Finding the Fourth Proportional to 21,367.18, 29,477.12 and 12,409.83

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Solution

The fourth proportional to 21,367.18, 29,477.12 and 12,409.83 is: 17,120.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,367.18 : 29,477.12 = 12,409.83 : x
  2. Step 2: Convert to fraction form
    21,367.18/29,477.12 = 12,409.83/x
  3. Step 3: Cross multiply
    21,367.18x = 29,477.12 × 12,409.83
  4. Step 4: Simplify right side
    21,367.18x = 365,806,048.09
  5. Step 5: Solve for x
    x = 365,806,048.09/21,367.18
  6. Step 6: Final answer
    x = 17,120.00

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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.