Home / 21,384.76-29,511.64-11,953.30

Finding the Fourth Proportional to 21,384.76, 29,511.64 and 11,953.30

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Solution

The fourth proportional to 21,384.76, 29,511.64 and 11,953.30 is: 16,495.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.76 : 29,511.64 = 11,953.30 : x
  2. Step 2: Convert to fraction form
    21,384.76/29,511.64 = 11,953.30/x
  3. Step 3: Cross multiply
    21,384.76x = 29,511.64 × 11,953.30
  4. Step 4: Simplify right side
    21,384.76x = 352,761,486.41
  5. Step 5: Solve for x
    x = 352,761,486.41/21,384.76
  6. Step 6: Final answer
    x = 16,495.93

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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.