Home / 12,897.16-19,344.45-4,129.72

Finding the Fourth Proportional to 12,897.16, 19,344.45 and 4,129.72

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Solution

The fourth proportional to 12,897.16, 19,344.45 and 4,129.72 is: 6,194.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.16 : 19,344.45 = 4,129.72 : x
  2. Step 2: Convert to fraction form
    12,897.16/19,344.45 = 4,129.72/x
  3. Step 3: Cross multiply
    12,897.16x = 19,344.45 × 4,129.72
  4. Step 4: Simplify right side
    12,897.16x = 79,887,162.05
  5. Step 5: Solve for x
    x = 79,887,162.05/12,897.16
  6. Step 6: Final answer
    x = 6,194.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.