Home / 21,238.97-29,309.81-11,807.53

Finding the Fourth Proportional to 21,238.97, 29,309.81 and 11,807.53

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Solution

The fourth proportional to 21,238.97, 29,309.81 and 11,807.53 is: 16,294.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.97 : 29,309.81 = 11,807.53 : x
  2. Step 2: Convert to fraction form
    21,238.97/29,309.81 = 11,807.53/x
  3. Step 3: Cross multiply
    21,238.97x = 29,309.81 × 11,807.53
  4. Step 4: Simplify right side
    21,238.97x = 346,076,527.03
  5. Step 5: Solve for x
    x = 346,076,527.03/21,238.97
  6. Step 6: Final answer
    x = 16,294.41

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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.