Home / 21,549.45-29,736.14-12,117.81

Finding the Fourth Proportional to 21,549.45, 29,736.14 and 12,117.81

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Solution

The fourth proportional to 21,549.45, 29,736.14 and 12,117.81 is: 16,721.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,549.45 : 29,736.14 = 12,117.81 : x
  2. Step 2: Convert to fraction form
    21,549.45/29,736.14 = 12,117.81/x
  3. Step 3: Cross multiply
    21,549.45x = 29,736.14 × 12,117.81
  4. Step 4: Simplify right side
    21,549.45x = 360,336,834.06
  5. Step 5: Solve for x
    x = 360,336,834.06/21,549.45
  6. Step 6: Final answer
    x = 16,721.39

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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.