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Finding the Fourth Proportional to 21,607.93, 29,818.95 and 11,671.93

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Solution

The fourth proportional to 21,607.93, 29,818.95 and 11,671.93 is: 16,107.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.93 : 29,818.95 = 11,671.93 : x
  2. Step 2: Convert to fraction form
    21,607.93/29,818.95 = 11,671.93/x
  3. Step 3: Cross multiply
    21,607.93x = 29,818.95 × 11,671.93
  4. Step 4: Simplify right side
    21,607.93x = 348,044,697.07
  5. Step 5: Solve for x
    x = 348,044,697.07/21,607.93
  6. Step 6: Final answer
    x = 16,107.27

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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.