Home / 21,276.18-29,356.68-12,323.15

Finding the Fourth Proportional to 21,276.18, 29,356.68 and 12,323.15

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Solution

The fourth proportional to 21,276.18, 29,356.68 and 12,323.15 is: 17,003.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.18 : 29,356.68 = 12,323.15 : x
  2. Step 2: Convert to fraction form
    21,276.18/29,356.68 = 12,323.15/x
  3. Step 3: Cross multiply
    21,276.18x = 29,356.68 × 12,323.15
  4. Step 4: Simplify right side
    21,276.18x = 361,766,771.14
  5. Step 5: Solve for x
    x = 361,766,771.14/21,276.18
  6. Step 6: Final answer
    x = 17,003.37

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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.