Home / 21,384.54-29,510.37-11,953.08

Finding the Fourth Proportional to 21,384.54, 29,510.37 and 11,953.08

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Solution

The fourth proportional to 21,384.54, 29,510.37 and 11,953.08 is: 16,495.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,384.54 : 29,510.37 = 11,953.08 : x
  2. Step 2: Convert to fraction form
    21,384.54/29,510.37 = 11,953.08/x
  3. Step 3: Cross multiply
    21,384.54x = 29,510.37 × 11,953.08
  4. Step 4: Simplify right side
    21,384.54x = 352,739,813.44
  5. Step 5: Solve for x
    x = 352,739,813.44/21,384.54
  6. Step 6: Final answer
    x = 16,495.09

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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.