Home / 19,860.48-27,384.75-12,680.64

Finding the Fourth Proportional to 19,860.48, 27,384.75 and 12,680.64

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Solution

The fourth proportional to 19,860.48, 27,384.75 and 12,680.64 is: 17,484.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,860.48 : 27,384.75 = 12,680.64 : x
  2. Step 2: Convert to fraction form
    19,860.48/27,384.75 = 12,680.64/x
  3. Step 3: Cross multiply
    19,860.48x = 27,384.75 × 12,680.64
  4. Step 4: Simplify right side
    19,860.48x = 347,256,156.24
  5. Step 5: Solve for x
    x = 347,256,156.24/19,860.48
  6. Step 6: Final answer
    x = 17,484.78

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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.