Home / 21,369.36-29,490.33-11,937.72

Finding the Fourth Proportional to 21,369.36, 29,490.33 and 11,937.72

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Solution

The fourth proportional to 21,369.36, 29,490.33 and 11,937.72 is: 16,474.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,369.36 : 29,490.33 = 11,937.72 : x
  2. Step 2: Convert to fraction form
    21,369.36/29,490.33 = 11,937.72/x
  3. Step 3: Cross multiply
    21,369.36x = 29,490.33 × 11,937.72
  4. Step 4: Simplify right side
    21,369.36x = 352,047,302.25
  5. Step 5: Solve for x
    x = 352,047,302.25/21,369.36
  6. Step 6: Final answer
    x = 16,474.40

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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.