Home / 21,385.72-29,515.08-11,956.24

Finding the Fourth Proportional to 21,385.72, 29,515.08 and 11,956.24

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Solution

The fourth proportional to 21,385.72, 29,515.08 and 11,956.24 is: 16,501.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.72 : 29,515.08 = 11,956.24 : x
  2. Step 2: Convert to fraction form
    21,385.72/29,515.08 = 11,956.24/x
  3. Step 3: Cross multiply
    21,385.72x = 29,515.08 × 11,956.24
  4. Step 4: Simplify right side
    21,385.72x = 352,889,380.10
  5. Step 5: Solve for x
    x = 352,889,380.10/21,385.72
  6. Step 6: Final answer
    x = 16,501.17

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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.