Home / 21,867.06-30,175.74-12,307.14

Finding the Fourth Proportional to 21,867.06, 30,175.74 and 12,307.14

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Solution

The fourth proportional to 21,867.06, 30,175.74 and 12,307.14 is: 16,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.06 : 30,175.74 = 12,307.14 : x
  2. Step 2: Convert to fraction form
    21,867.06/30,175.74 = 12,307.14/x
  3. Step 3: Cross multiply
    21,867.06x = 30,175.74 × 12,307.14
  4. Step 4: Simplify right side
    21,867.06x = 371,377,056.78
  5. Step 5: Solve for x
    x = 371,377,056.78/21,867.06
  6. Step 6: Final answer
    x = 16,983.40

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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.