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Finding the Fourth Proportional to 21,703.71, 29,953.08 and 12,272.07

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Solution

The fourth proportional to 21,703.71, 29,953.08 and 12,272.07 is: 16,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,703.71 : 29,953.08 = 12,272.07 : x
  2. Step 2: Convert to fraction form
    21,703.71/29,953.08 = 12,272.07/x
  3. Step 3: Cross multiply
    21,703.71x = 29,953.08 × 12,272.07
  4. Step 4: Simplify right side
    21,703.71x = 367,586,294.48
  5. Step 5: Solve for x
    x = 367,586,294.48/21,703.71
  6. Step 6: Final answer
    x = 16,936.56

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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.