Home / 21,740.27-30,001.52-12,309.71

Finding the Fourth Proportional to 21,740.27, 30,001.52 and 12,309.71

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Solution

The fourth proportional to 21,740.27, 30,001.52 and 12,309.71 is: 16,987.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,740.27 : 30,001.52 = 12,309.71 : x
  2. Step 2: Convert to fraction form
    21,740.27/30,001.52 = 12,309.71/x
  3. Step 3: Cross multiply
    21,740.27x = 30,001.52 × 12,309.71
  4. Step 4: Simplify right side
    21,740.27x = 369,309,891.53
  5. Step 5: Solve for x
    x = 369,309,891.53/21,740.27
  6. Step 6: Final answer
    x = 16,987.37

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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.