Home / 19,929.61-27,516.09-12,387.19

Finding the Fourth Proportional to 19,929.61, 27,516.09 and 12,387.19

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Solution

The fourth proportional to 19,929.61, 27,516.09 and 12,387.19 is: 17,102.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.61 : 27,516.09 = 12,387.19 : x
  2. Step 2: Convert to fraction form
    19,929.61/27,516.09 = 12,387.19/x
  3. Step 3: Cross multiply
    19,929.61x = 27,516.09 × 12,387.19
  4. Step 4: Simplify right side
    19,929.61x = 340,847,034.89
  5. Step 5: Solve for x
    x = 340,847,034.89/19,929.61
  6. Step 6: Final answer
    x = 17,102.54

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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.