Home / 15,813.19-21,804.43-10,780.36

Finding the Fourth Proportional to 15,813.19, 21,804.43 and 10,780.36

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Solution

The fourth proportional to 15,813.19, 21,804.43 and 10,780.36 is: 14,864.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.19 : 21,804.43 = 10,780.36 : x
  2. Step 2: Convert to fraction form
    15,813.19/21,804.43 = 10,780.36/x
  3. Step 3: Cross multiply
    15,813.19x = 21,804.43 × 10,780.36
  4. Step 4: Simplify right side
    15,813.19x = 235,059,604.99
  5. Step 5: Solve for x
    x = 235,059,604.99/15,813.19
  6. Step 6: Final answer
    x = 14,864.78

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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.