Home / 21,242.25-29,314.98-11,811.42

Finding the Fourth Proportional to 21,242.25, 29,314.98 and 11,811.42

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Solution

The fourth proportional to 21,242.25, 29,314.98 and 11,811.42 is: 16,300.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.25 : 29,314.98 = 11,811.42 : x
  2. Step 2: Convert to fraction form
    21,242.25/29,314.98 = 11,811.42/x
  3. Step 3: Cross multiply
    21,242.25x = 29,314.98 × 11,811.42
  4. Step 4: Simplify right side
    21,242.25x = 346,251,541.07
  5. Step 5: Solve for x
    x = 346,251,541.07/21,242.25
  6. Step 6: Final answer
    x = 16,300.13

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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.