Home / 19,929.67-27,516.17-12,387.26

Finding the Fourth Proportional to 19,929.67, 27,516.17 and 12,387.26

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Solution

The fourth proportional to 19,929.67, 27,516.17 and 12,387.26 is: 17,102.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.67 : 27,516.17 = 12,387.26 : x
  2. Step 2: Convert to fraction form
    19,929.67/27,516.17 = 12,387.26/x
  3. Step 3: Cross multiply
    19,929.67x = 27,516.17 × 12,387.26
  4. Step 4: Simplify right side
    19,929.67x = 340,849,951.99
  5. Step 5: Solve for x
    x = 340,849,951.99/19,929.67
  6. Step 6: Final answer
    x = 17,102.64

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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.