Home / 19,929.80-27,503.31-10,977.34

Finding the Fourth Proportional to 19,929.80, 27,503.31 and 10,977.34

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Solution

The fourth proportional to 19,929.80, 27,503.31 and 10,977.34 is: 15,148.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,929.80 : 27,503.31 = 10,977.34 : x
  2. Step 2: Convert to fraction form
    19,929.80/27,503.31 = 10,977.34/x
  3. Step 3: Cross multiply
    19,929.80x = 27,503.31 × 10,977.34
  4. Step 4: Simplify right side
    19,929.80x = 301,913,047.48
  5. Step 5: Solve for x
    x = 301,913,047.48/19,929.80
  6. Step 6: Final answer
    x = 15,148.82

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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.