Home / 19,911.04-27,478.16-12,359.80

Finding the Fourth Proportional to 19,911.04, 27,478.16 and 12,359.80

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Solution

The fourth proportional to 19,911.04, 27,478.16 and 12,359.80 is: 17,057.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.04 : 27,478.16 = 12,359.80 : x
  2. Step 2: Convert to fraction form
    19,911.04/27,478.16 = 12,359.80/x
  3. Step 3: Cross multiply
    19,911.04x = 27,478.16 × 12,359.80
  4. Step 4: Simplify right side
    19,911.04x = 339,624,561.97
  5. Step 5: Solve for x
    x = 339,624,561.97/19,911.04
  6. Step 6: Final answer
    x = 17,057.10

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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.