Home / 21,108.84-29,130.03-11,677.92

Finding the Fourth Proportional to 21,108.84, 29,130.03 and 11,677.92

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Solution

The fourth proportional to 21,108.84, 29,130.03 and 11,677.92 is: 16,115.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,108.84 : 29,130.03 = 11,677.92 : x
  2. Step 2: Convert to fraction form
    21,108.84/29,130.03 = 11,677.92/x
  3. Step 3: Cross multiply
    21,108.84x = 29,130.03 × 11,677.92
  4. Step 4: Simplify right side
    21,108.84x = 340,178,159.94
  5. Step 5: Solve for x
    x = 340,178,159.94/21,108.84
  6. Step 6: Final answer
    x = 16,115.44

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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.