Home / 19,729.08-27,207.66-12,657.72

Finding the Fourth Proportional to 19,729.08, 27,207.66 and 12,657.72

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Solution

The fourth proportional to 19,729.08, 27,207.66 and 12,657.72 is: 17,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,729.08 : 27,207.66 = 12,657.72 : x
  2. Step 2: Convert to fraction form
    19,729.08/27,207.66 = 12,657.72/x
  3. Step 3: Cross multiply
    19,729.08x = 27,207.66 × 12,657.72
  4. Step 4: Simplify right side
    19,729.08x = 344,386,942.14
  5. Step 5: Solve for x
    x = 344,386,942.14/19,729.08
  6. Step 6: Final answer
    x = 17,455.80

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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.