Home / 21,387.84-29,516.58-11,957.04

Finding the Fourth Proportional to 21,387.84, 29,516.58 and 11,957.04

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Solution

The fourth proportional to 21,387.84, 29,516.58 and 11,957.04 is: 16,501.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.84 : 29,516.58 = 11,957.04 : x
  2. Step 2: Convert to fraction form
    21,387.84/29,516.58 = 11,957.04/x
  3. Step 3: Cross multiply
    21,387.84x = 29,516.58 × 11,957.04
  4. Step 4: Simplify right side
    21,387.84x = 352,930,927.72
  5. Step 5: Solve for x
    x = 352,930,927.72/21,387.84
  6. Step 6: Final answer
    x = 16,501.48

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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.