Home / 21,867.39-30,173.99-12,307.77

Finding the Fourth Proportional to 21,867.39, 30,173.99 and 12,307.77

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Solution

The fourth proportional to 21,867.39, 30,173.99 and 12,307.77 is: 16,983.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.39 : 30,173.99 = 12,307.77 : x
  2. Step 2: Convert to fraction form
    21,867.39/30,173.99 = 12,307.77/x
  3. Step 3: Cross multiply
    21,867.39x = 30,173.99 × 12,307.77
  4. Step 4: Simplify right side
    21,867.39x = 371,374,467.36
  5. Step 5: Solve for x
    x = 371,374,467.36/21,867.39
  6. Step 6: Final answer
    x = 16,983.03

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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.