Home / 19,761.82-27,270.68-10,809.40

Finding the Fourth Proportional to 19,761.82, 27,270.68 and 10,809.40

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Solution

The fourth proportional to 19,761.82, 27,270.68 and 10,809.40 is: 14,916.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,761.82 : 27,270.68 = 10,809.40 : x
  2. Step 2: Convert to fraction form
    19,761.82/27,270.68 = 10,809.40/x
  3. Step 3: Cross multiply
    19,761.82x = 27,270.68 × 10,809.40
  4. Step 4: Simplify right side
    19,761.82x = 294,779,617.30
  5. Step 5: Solve for x
    x = 294,779,617.30/19,761.82
  6. Step 6: Final answer
    x = 14,916.62

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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.