Home / 21,117.63-29,137.42-12,622.50

Finding the Fourth Proportional to 21,117.63, 29,137.42 and 12,622.50

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Solution

The fourth proportional to 21,117.63, 29,137.42 and 12,622.50 is: 17,416.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117.63 : 29,137.42 = 12,622.50 : x
  2. Step 2: Convert to fraction form
    21,117.63/29,137.42 = 12,622.50/x
  3. Step 3: Cross multiply
    21,117.63x = 29,137.42 × 12,622.50
  4. Step 4: Simplify right side
    21,117.63x = 367,787,052.39
  5. Step 5: Solve for x
    x = 367,787,052.39/21,117.63
  6. Step 6: Final answer
    x = 17,416.11

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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.