Home / 19,765.62-27,276.40-10,813.20

Finding the Fourth Proportional to 19,765.62, 27,276.40 and 10,813.20

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Solution

The fourth proportional to 19,765.62, 27,276.40 and 10,813.20 is: 14,922.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.62 : 27,276.40 = 10,813.20 : x
  2. Step 2: Convert to fraction form
    19,765.62/27,276.40 = 10,813.20/x
  3. Step 3: Cross multiply
    19,765.62x = 27,276.40 × 10,813.20
  4. Step 4: Simplify right side
    19,765.62x = 294,945,018.89
  5. Step 5: Solve for x
    x = 294,945,018.89/19,765.62
  6. Step 6: Final answer
    x = 14,922.12

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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.