Home / 19,929.95-27,516.56-15,384.43

Finding the Fourth Proportional to 19,929.95, 27,516.56 and 15,384.43

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Solution

The fourth proportional to 19,929.95, 27,516.56 and 15,384.43 is: 21,240.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.95 : 27,516.56 = 15,384.43 : x
  2. Step 2: Convert to fraction form
    19,929.95/27,516.56 = 15,384.43/x
  3. Step 3: Cross multiply
    19,929.95x = 27,516.56 × 15,384.43
  4. Step 4: Simplify right side
    19,929.95x = 423,326,635.17
  5. Step 5: Solve for x
    x = 423,326,635.17/19,929.95
  6. Step 6: Final answer
    x = 21,240.73

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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.