Home / 21,385.37-29,511.24-11,955.76

Finding the Fourth Proportional to 21,385.37, 29,511.24 and 11,955.76

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Solution

The fourth proportional to 21,385.37, 29,511.24 and 11,955.76 is: 16,498.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.37 : 29,511.24 = 11,955.76 : x
  2. Step 2: Convert to fraction form
    21,385.37/29,511.24 = 11,955.76/x
  3. Step 3: Cross multiply
    21,385.37x = 29,511.24 × 11,955.76
  4. Step 4: Simplify right side
    21,385.37x = 352,829,184.13
  5. Step 5: Solve for x
    x = 352,829,184.13/21,385.37
  6. Step 6: Final answer
    x = 16,498.62

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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.