Home / 21,117.85-29,109.13-16,634.50

Finding the Fourth Proportional to 21,117.85, 29,109.13 and 16,634.50

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Solution

The fourth proportional to 21,117.85, 29,109.13 and 16,634.50 is: 22,929.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.85 : 29,109.13 = 16,634.50 : x
  2. Step 2: Convert to fraction form
    21,117.85/29,109.13 = 16,634.50/x
  3. Step 3: Cross multiply
    21,117.85x = 29,109.13 × 16,634.50
  4. Step 4: Simplify right side
    21,117.85x = 484,215,822.99
  5. Step 5: Solve for x
    x = 484,215,822.99/21,117.85
  6. Step 6: Final answer
    x = 22,929.22

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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.